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Articles 61 - 90 of 90
Full-Text Articles in Life Sciences
Molecular Characterization Of The Antiviral Properties Of The Small Herc Family Of Proteins, Ermela Paparisto
Molecular Characterization Of The Antiviral Properties Of The Small Herc Family Of Proteins, Ermela Paparisto
Electronic Thesis and Dissertation Repository
Although viruses are obligate intracellular parasites, they have their own evolutionary trajectory, their genomes are in a constant battle to overcome the defenses of the host. This thesis investigates the role of the small HERC family of proteins in the battle against two deadly viruses: Human Immunodeficiency Virus -1 (HIV) and Zaire ebolavirus (EBOV). Although their discovery occurred decades ago, little knowledge is available about the small HERC family, their functions, and modes of interactions with other cellular proteins. In the first chapter, the structural evolution of the small HERC family and related functional changes that have occurred over time …
Probing Amyloid-Beta Protein Structure And Dynamics With A Selective Antibody, Shikha Grover
Probing Amyloid-Beta Protein Structure And Dynamics With A Selective Antibody, Shikha Grover
Dissertations
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder. The AD brain is characterized by significant neuronal loss and accumulation of insoluble fibrillar amyloid-β protein (Aβ) plaques and tau protein neurofibrillary tangles in the brain. However, over the last decade, many studies have shown that the neurodegenerative effect of Aβ may in fact be caused by various soluble oligomeric forms as opposed to the insoluble fibrils. Furthermore, the data suggest that a pre-fibrillar aggregated form, termed protofibrils, mediates direct neurotoxicity, and triggers a robust neuroinflammatory response.
Antibodies targeting the various conformation of Aβ are important therapeutic agents to prevent the progression …
Tgf-B Signaling Mechanisms In Caenorhabditis Elegans Response To Bacterial Pathogens, Emma J. Ciccarelli
Tgf-B Signaling Mechanisms In Caenorhabditis Elegans Response To Bacterial Pathogens, Emma J. Ciccarelli
Dissertations, Theses, and Capstone Projects
When exposed to infection, the nematode C. elegans mounts an innate immune response through secretion of antimicrobial peptides (AMPs). Different signaling pathways in the worm regulate release of these AMPs. One highly conserved pathway is the C. elegans BMP like pathway – regulated by the ligand DBL-1. The DBL-1 pathway is noted for its significant role in development but has also been shown to regulate many post-developmental processes within the worm, including the immune response. We are interested in determining how DBL-1 signaling can mediate a response specific to immunity, separate from its other functions in the worm. Through survival …
Human Milk: From Covid-19 Immunity To Breast Cancer Risk Assessment, Vignesh Narayanaswamy
Human Milk: From Covid-19 Immunity To Breast Cancer Risk Assessment, Vignesh Narayanaswamy
Doctoral Dissertations
Breastmilk is a complex biological fluid containing macromolecules including lipids, oligosaccharides, proteins as well as several types of cells. Several studies have reported in detail of these components. My focus is studying the protein component of breastmilk, specifically antibodies, cytokines, and other secreted factors in the setting of different pathogenicity in women. Studies have demonstrated that the levels of numerous cytokines as well as the levels of pathogen-specific antibodies are altered in milk upon either maternal or infant infections. Additionally, there are reports that the levels of certain inflammatory markers are altered in milk among women with breast cancer or …
The Immune Modulation On Innate Immunity, From Pathogen Recognition To Fungal Clearance., Ko-Wei Liu
The Immune Modulation On Innate Immunity, From Pathogen Recognition To Fungal Clearance., Ko-Wei Liu
Dartmouth College Ph.D Dissertations
The human lung is not sterile but a complex environment with various microorganisms. Besides commensals in the lung, hundreds to thousands of individual microbiomes enter the lung every day but without causing the symptom. Host innate immunity plays an important role in maintaining homeostasis of the lung environment and as the first defense line against pathogens. Aspergillus fumigatus (A. fumigatus) is a saprophytic filamentous fungus that can cause human disease in immune compromised patients. However, with functional innate immunity, immune cells can quickly recognize pathogen associated molecular patterns (PAMPs) from A. fumigatus through pattern recognition receptors (PRRs). The activation of …
The Impacts Of Immune Challenges On Fish Behavior And Physiology, Teisha King
The Impacts Of Immune Challenges On Fish Behavior And Physiology, Teisha King
LSU Doctoral Dissertations
For species living in dominance hierarchies, social rank dictates access to resources and often contributes to reproductive success. To ensure survival, individuals constantly evaluate trade- offs between crucial biological systems, like the reproductive and immune systems, depending on their social rank and physiological state. Little is known about how social species balance interactions between immune system function, fluctuations in social status and reproductive fitness, and the performance of behaviors necessary for maintaining social status when sick, particularly in fishes, the largest and most diverse group of vertebrates. My dissertation research uses a whole animal approach to examine how physiological profiles …
Generation Of Chimeric Rhinoviruses Presenting Sars-Cov-2 Broadly Neutralizing Epitopes And Their Antigenicity Characterization, Danish Ansari
Generation Of Chimeric Rhinoviruses Presenting Sars-Cov-2 Broadly Neutralizing Epitopes And Their Antigenicity Characterization, Danish Ansari
Biotechnology Theses
The global COVID pandemic is not yet fully under control as there were over 21 million new cases of SARS-CoV-2 infections and over 50,000 deaths globally as of January of 2022. A heavily mutated variant of concern, Omicron is responsible for most of these cases which demands an urgency for a new vaccine. NIH reports over 180 vaccine candidates that use various strategies currently in development. However, a recurring concern with these vaccines is that the continuous viral mutations decrease the efficacy of vaccines. Therefore, we proposed to construct a human rhinovirus (HRV) based chimeric virus containing highly conserved, broadly …
Examining The Immune Regulation Of Nlrp12 Through Novel Protein Interactions, Catherine Rippe
Examining The Immune Regulation Of Nlrp12 Through Novel Protein Interactions, Catherine Rippe
MSU Graduate Theses
NOD-like receptors (NLRs) are intracellular proteins that play an important role in the regulation of the innate immune response to pathogens. Since being identified, various functions for NOD-like receptor pyrin domain containing 12 (NLRP12) have been suggested. It has been shown to negatively regulate the inflammatory response through canonical and noncanonical NF-kB signaling pathways, control tumorigenesis and gut homeostasis and exacerbate inflammation through the formation of a multi-protein complex called an inflammasome. Due to the varying roles established for NLRP12, the mechanisms by which it functions remain poorly understood. In this study, I sought to confirm a novel protein-protein interaction …
Tissue And Sex-Dependent Regulation Of Innate Immunity And Rna Editing In Mice, Kelsey R. Kendrick
Tissue And Sex-Dependent Regulation Of Innate Immunity And Rna Editing In Mice, Kelsey R. Kendrick
MSU Graduate Theses
Inflammation occurs as a result of insult or infection within the body. Individual cells respond to inflammation by upregulating genes that help mediate the immune response, such as ADAR1. ADAR1 helps regulate the immune response but also catalyzes a process called RNA editing. RNA editing alters the sequence of select mRNAs to alter the encoded proteins. The result is altered function of the encoded protein, which is often beneficial for the cell. Our goal was to determine how inflammation affects the function of ADAR1. Since we know that the effects of inflammation vary between different organs and sexes, we examined …
The Covid-19 Pandemic And Its Influence On The Human Immune System, Nicole L. Riha
The Covid-19 Pandemic And Its Influence On The Human Immune System, Nicole L. Riha
Undergraduate Honors Theses
COVID-19 rapidly infected the world, and scientists continue to research how the disease spread and killed as many as it did by analyzing how it affects the human immune system and referring to past pandemics. Since the pandemic is ongoing, scientists do not fully understand how the virus works and if lockdowns were effective. Nevertheless, a discussion on what is known about COVID-19's influence on the human immune system is needed. With an understanding of the COVID-19 pandemic, scientists can make more effective treatments for COVID-19 and learn how to manage future pandemics.
The Development Of A New Pertussis Booster Formulation Via The Implementation Of New Adjuvants And Utilization Of Alternate Routes Of Administration, Megan Ashley Dejong
The Development Of A New Pertussis Booster Formulation Via The Implementation Of New Adjuvants And Utilization Of Alternate Routes Of Administration, Megan Ashley Dejong
Graduate Theses, Dissertations, and Problem Reports
Pertussis (whooping cough) is a respiratory disease caused by airborne transmission of the Gram-negative bacterium, Bordetella pertussis. Prior to the development of the first pertussis vaccines (whole cell (wP) vaccines), the incidence of pertussis was in the hundreds of thousands of cases per year, which led to the death of many children, as the infection is most severe in younger populations. Thankfully, the wP formulation resulted in a dramatic decrease in the number of annual pertussis cases, nearly eradicating the disease. However, as wP contained the whole B. pertussis bacterium (and its lipooligosaccharide (LOS)), reactogenicity issues became apparent, leading …
Investigating The Relationship Between Metabolic Reprogramming And Peripheral Cd4+ T-Cell Inflammation In Human Type 2 Diabetes Pathogenesis, Gabriella Kalantar
Investigating The Relationship Between Metabolic Reprogramming And Peripheral Cd4+ T-Cell Inflammation In Human Type 2 Diabetes Pathogenesis, Gabriella Kalantar
Theses and Dissertations--Microbiology, Immunology, and Molecular Genetics
Chronic, low-grade systemic inflammation rises in obesity and promotes type 2 diabetes (T2D). Circulating immune cells are key indicators of obesity and T2D pathogenesis. T cells outnumber monocytes, in blood, suggesting that T cells might fuel peripheral inflammation in obesity/T2D. Our lab’s work supports this idea by identification of a Th17 cytokine profile in T2D from T-cell stimulated peripheral blood mononuclear cells. Work described herein further supported this work by demonstrating that T cells dominate peripheral inflammation over monocytes across the spectrum of obesity and glycemic control. Our lab has also recently shown that inflammation changes during prediabetes (preT2D), identified …
Odd Bedfellows & Marriage Of Necessity: Public Health And Politics In American Federalism, Gabriella Victoria Chianese
Odd Bedfellows & Marriage Of Necessity: Public Health And Politics In American Federalism, Gabriella Victoria Chianese
Honors Theses and Capstones
In the wake of the coronavirus disease 2019 (COVID-19) pandemic, while the public disagrees over mask mandates, required vaccinations, and social distancing, it seems like one common sentiment exists – a distaste for the odd bedfellows of politics and public health. There are those who cry for the compartmentalization of the science of public health and the art of politics to rectify this situation. In the wake of so much confusion and chaos, it is not unjustified to demand the depoliticization of public health; however, this response is unrealistic given the modern political climate, demonstrates a narrow understanding of the …
Investigating The Role Of Bromodomain Proteins On Histone Post-Translational Modifications In Toxoplasma Gondii, Joshua Steven Berthiaume
Investigating The Role Of Bromodomain Proteins On Histone Post-Translational Modifications In Toxoplasma Gondii, Joshua Steven Berthiaume
Honors Theses and Capstones
Toxoplasma gondii is a prevalent pathogenic parasite that infects approximately 25 percent of the US population. For the parasite to successfully establish and maintain infection in its host, properly controlled regulation of gene expression is critical. One way Toxoplasma regulates gene expression is through modification of histone proteins that bind to DNA and can control gene accessibility. Acetylation is a modification that is added to histones that changes chromatin structure to enhance gene activation. Histone acetylation can also regulate gene expression by recruitment of important regulators such as bromodomain proteins (BDP). A previous study showed that loss of the bromodomain …
Sex-Dependent Effects Of Induced Acute Inflammation On Glucose Homeostasis And Rna Editing Enzymes, Christian A. Rivas
Sex-Dependent Effects Of Induced Acute Inflammation On Glucose Homeostasis And Rna Editing Enzymes, Christian A. Rivas
MSU Graduate Theses
The first line of defense against bodily insults, like pathogen invasion, is the innate immune system. Innate immunity sets in motion countless cascades that result in inflammation. Inflammation simultaneously affects multiple biological processes like metabolism and gene expression. Males and females react differently to inflammation. To understand both molecular and physiological sex differences in inflammation, we examined how inflammation affects gene expression and glucose metabolism. Adenosine deaminase acting on RNA (ADAR1) is upregulated by inflammation and catalyzes RNA editing, a process where nucleotides encoded by the genome are modified. ADAR1 also controls the innate immune reaction by decreasing activity of …
Influence Of Cell Cycle On Aim2 Inflammasome Activation, Ashok Kumar Dubey
Influence Of Cell Cycle On Aim2 Inflammasome Activation, Ashok Kumar Dubey
MSU Graduate Theses
A cell cycle's progression has a significant role in the development of a disease. All the signaling pathways and inflammatory reactions are maintained in a healthy mode if cell cycle checkpoints are precisely regulated and kept in homeostasis. AIM2 inflammasome is a cytoplasmic double-stranded DNA sensor. Upon activation, it elicits an inflammatory reaction with the release of pro-inflammatory cytokines such as IL-1β and IL-18 and they are cleaved by the proteases, Caspase-1 from their inactive form. Also, the AIM2 inflammasome helps in regulating cell division and inhibits cell proliferation; thus, leading to a cell death called pyroptosis. Here, I examined …
Applications Of Bayesian Hierarchical Detection Models, Emily Beasley
Applications Of Bayesian Hierarchical Detection Models, Emily Beasley
Graduate College Dissertations and Theses
Bayesian hierarchical detection models are useful for addressing uncertainty in datasets in the form of detection error and can be adapted to a variety of research questions. This dissertation uses three case studies to highlight advantages of Bayesian hierarchical detection models: 1) using prior information to model undetected species, 2) efficiently modeling a naturally hierarchical system, and 3) correcting for observation bias in two interconnected ecological metrics for effective disease management.Detection error can bias ecological observations, especially when a species is never detected during sampling. In many communities, the probable identity of these species is known from previous research, but …
Functional Characterization Of A Putative Long Non-Coding Rna U90926: Role In Inflammation And Adipose Tissue Homeostasis, Bristy Sabikunnahar
Functional Characterization Of A Putative Long Non-Coding Rna U90926: Role In Inflammation And Adipose Tissue Homeostasis, Bristy Sabikunnahar
Graduate College Dissertations and Theses
Long non-coding RNAs (lncRNAs) are one of the most commonly transcribed functional non-coding RNAs in mammalian genomes, yet majority of them remain understudied. Recent advancement in high throughput sequencing and computational knowledge have revealed the identity of thousands of lncRNAs and their association with numerous diseases and cellular processes. In the last two decades, flurries of studies showed experimentally that lncRNAs regulate a myriad of essential biological processes including immune system. Although a large number of lncRNAs have been identified in a variety of immune cells, only a handful of them have been characterized for biological function and mechanisms. In …
Investigating Mirna Regulation Of The Human Apobec3 Enzymes, William Dietrich
Investigating Mirna Regulation Of The Human Apobec3 Enzymes, William Dietrich
All Graduate Theses, Dissertations, and Other Capstone Projects
The human apolipoprotein B mRNA editing enzyme catalytic polypeptide 3 (APOBEC3, A3) are a family of proteins consisting of seven enzymes, A3A, B, C, D, F, G and H, which function as cytosine deaminases. The enzymes’ purpose in the cell is to mutate viral DNA during infection hindering or stopping replication of viruses such as human papillomavirus, herpes simplex virus, and HIV-1. Several of the A3 enzymes have also been implicated in contributing to cancers such as head and neck and breast cancers by mutating cellular genomic DNA, making the ability to control A3 expression an attractive target for cancer …
The Role Of Slam-Sap Signaling In The Development Of Innate-Like Gamma Delta (Γδ) T Cells, Somen Kumar Mistri
The Role Of Slam-Sap Signaling In The Development Of Innate-Like Gamma Delta (Γδ) T Cells, Somen Kumar Mistri
Graduate College Dissertations and Theses
Gamma delta (γδ) T cells are unconventional T cells that are highly enriched in the mucosal tissues such as the lung, gut, and skin, where they play critical roles in host immune surveillance, autoimmunity, and anti-tumor immunity. γδ T cells are notable for their ability to rapidly produce large amounts of cytokines such as IL-17 (γδT17), IFN-γ (γδT1), and IL-4 (γδT2). Interestingly, unlike their well-studied conventional αβ T cell counterparts, most γδ T cells acquire their functional programming during specific developmental windows of thymic development using mechanisms that remain unclear. Here, we investigated the role of the SLAM-SAP signaling pathway …
Cluster Homolog Of Immunoglobulin-Like Receptor Genes In Chicken Immune Responses, Brandi A. Sparling
Cluster Homolog Of Immunoglobulin-Like Receptor Genes In Chicken Immune Responses, Brandi A. Sparling
Graduate Theses, Dissertations, and Problem Reports
This dissertation explores the identity and role of immunoglobulin-like (Ig-like) receptors in chickens, with focus on their implications in disease and disease progression. These receptors, wisely expressed across immune cells, interact with the major histocompatibility complex (MHC) class I molecules to modulate immune responses in mammals. Due to the insufficient representation of chicken Ig-like receptors in online databases, this study systematically annotates the chicken Cluster Homolog of Immunoglobulin-like Receptors (CHIR) genes using advanced bioinformatic techniques, aligning with the release of the 7th edition of the chicken genome assembly that comprises builds for a broiler and layer chicken. The analysis identifies …
A Picture Worth A Thousand Words: Factors Influencing Disability Accommodations, Alicia E. Martin
A Picture Worth A Thousand Words: Factors Influencing Disability Accommodations, Alicia E. Martin
Cal Poly Humboldt theses and projects
Because not all disabilities look the same it is difficult to label a person with disabilities just by looking at them. Given that our knowledge, attitudes, and perceptions impact how we interpret our world and our willingness to act, people, including professors, may be biased toward providing accommodations for those with easily recognizable disabilities and biased against those with non-recognizable disabilities, and this may impact the disabled person’s ability to learn. This thesis aims to address whether professors’ disability-related attitudes, perceptions of accommodation reasonableness, and willingness to provide accommodations differ when the disability is recognizable (student is pictured in a …
Visualization And Characterization Of The Immunological Synapse Between Chlorotoxin Chimeric Antigen (Cltx-Car) Redirected T Cells And Targeted Glioblastoma Tumors, Arianna Livi
CMC Senior Theses
Chimeric Antigen Receptor T (CAR-T) cells have demonstrated anti-tumor activity against aggressive and invasive cancers such as glioblastoma (GBM); however, clinical response rates remain low in clinical trial studies. Tumor heterogeneity and tumor microenvironment conditions pose significant challenges for treatment of GBM, thus continuous optimization of CAR-T cell therapies and identification of novel, widely expressed, and highly specific GBM antigens are vital to better patient outcomes. A newly developed CAR-T cell construct incorporating chlorotoxin (CLTX) as the targeting domain exhibited broad GBM-targeting capabilities and elicited potent cytotoxic effects during preclinical studies and is currently being tested in a phase I …
Environmental Toxicants And Human B Cells: Insights From Crispr Editing And Genomic Sequencing, Clayton Allex-Buckner
Environmental Toxicants And Human B Cells: Insights From Crispr Editing And Genomic Sequencing, Clayton Allex-Buckner
Browse all Theses and Dissertations
The human immunoglobulin heavy chain gene locus (IGH) has two 3 prime regulatory regions (3’IGHRR), each containing three enhancers (hs3, hs1.2, hs4). In animal models, the 3’IghRR regulates IgH expression and class switch recombination (CSR) to different Ig isotypes. The 3’IGHRR hs1.2 enhancer in humans is polymorphic in that an invariant sequence (IS) can be repeated one to four times in tandem. The hs1.2 polymorphism is of interest due to its association with several human autoimmune disorders and its potential sensitivity to exogenous substances such as 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD or dioxin). In mouse models, TCDD inhibits the hs1.2 enhancer and 3’IghRR …
Complex Narratives Of Individuals Living With Alpha-Gal Syndrome (Ags). A Mixed-Methods Investigation: Examined Through Self-Reported Data, In-Person Interviews, And A Group Body Mapping Art Therapy Intervention, Sylvan Streightiff
Art Therapy | Master's Theses
Alpha-gal (galactose-α-1,3-galactose) Syndrome or AGS is an under-recognized chronic condition which coincides with tick-bite exposure, resulting in a unique allergy to non-primate mammalian products and byproducts (in addition to other items caring the α-gal epitope such as carrageenan, agar-agar, and nori). This paper explores the experiences of individuals with this illness, establishing psychological context for expressed symptomatology, while emphasizing the complex trauma rooted in the population’s experiences of the life-altering and life-threatening contexts associated with managing AGS. This research is structured with Acceptance and Commitment Therapy (ACT) theory and utilizes a mixed-methods approach to arts-based research with the goal of …
Dna Methylation And The Response To Infection In Introduced House Sparrows, Melanie Gibson
Dna Methylation And The Response To Infection In Introduced House Sparrows, Melanie Gibson
Electronic Theses and Dissertations
Epigenetics is the study of molecular modification of a genome without changing its base pairs. The most studied type of epigenetic mechanism is DNA methylation, which is capable of turning a gene “on” or “off.” Epigenetic potential is the capacity to which an individual can have methylation on its genome. The more CpGs available, the greater the epigenetic potential. In invasive species, genetic variation has been observed to be paradoxical: not much of it exists on a genomic level, but epigenetically, phenotypic variation can occur. The focus on shift in gene expression in this study is on Toll-Like Receptor 4 …
The Hepatic Immunological Pattern Shaped By Dominant-Subdominant Cellular Interactions Creates A Collective Function Beyond The Function Of Each Cellular Constituent To Orchestrate Progression Of Hepatocellular Carcinoma, Nicholas J. Koelsch
Theses and Dissertations
Abundance of data on the role of inflammatory immune responses in the progression or inhibition of hepatocellular carcinoma (HCC) has failed to offer a curative immunotherapy for HCC. This is largely because of taking reductionist approaches and missing the collective function of the hepatic immune system by focusing on specific immune cell types. To this end, we propose that focusing on the dominant-subdominant patterns of the immune cells would allow understanding of the mechanism by which a collective immune function emerges. To identify the collective immune function through a systems immunology perspective, we performed high-throughput analysis of snRNAseq data collected …
Evaluation Of Leishmanicidal Activities Of 4-Thiazolidinones Against Leishmania Major, The Causative Agent Of Human Cutaneous Leishmaniasis, Kiera Bush
All Master's Theses
The leishmaniases are a group of vector-borne parasitic diseases that affect many developing countries including parts of Africa, India, and the Middle East in addition to Southern Europe and the Americas. It is estimated that worldwide, there are about 3 million new cases of leishmaniases each year leading to as many as 50,000 fatalities annually. The parasites that cause leishmaniasis belong to the genus Leishmania spp and are transmitted by the female phlebotomine sand fly. There are three clinical forms of the infection: visceral, mucocutaneous, and cutaneous. However, the focus of this paper is on cutaneous leishmaniasis that causes skin …
Interactions Between Hiv And Opioids On Antiretroviral Accumulation, The Blood Brain Barrier, And The Inflammatory Response In The Brain., Kara Rademeyer
Interactions Between Hiv And Opioids On Antiretroviral Accumulation, The Blood Brain Barrier, And The Inflammatory Response In The Brain., Kara Rademeyer
Theses and Dissertations
The complex mechanisms related to HIV infection, neurodegeneration, and chronic neuroinflammation collectively describe neuroHIV (Hauser et al. 2007; Chang et al. 2014; Smith et al. 2014). Specifically, opioid abuse, poor penetration of antiretroviral (ARV) drugs, chronic inflammation and neuronal injury/degeneration are all implicated in neuroHIV (Fantuzzi et al. 2003; Letendre et al. 2004; Verani et al. 2005; Duncan and Sattentau 2011; Hong and Banks 2015; Simoes and Justino 2015; Olivier et al. 2018; Murphy et al. 2019; Osborne et al. 2020). For the first time, we demonstrate that morphine, fentanyl, and methadone in vivo alter the brain accumulation of ARVs, …
Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison
Intestinal Parasite Infection In Tibetan Macaques (Macac Thebetana) In Eastern China, Miarisoa Ramilison
All Master's Theses
Grooming is one of the crucial social behaviors of primate species that functions to remove parasites and maintain social bonds. Although, much data exists to support the idea that grooming is essential in forming and sustaining social bonds among individuals, there is a lack of information about the extent to which it removes ectoparasites or contributes to the spread of internal parasites. To fill this gap in the literature, we investigated the relationship between social contact behavior including grooming and intestinal parasite infection in Tibetan macaques (Macaca thibetana). This species lives at Mt. Huangshan in China. We used …