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Uri Undergraduate And Graduate Course Catalog 2025-2026, University Of Rhode Island

URI Course Catalogs Archive

This is a downloadable PDF version of the University of Rhode Island course catalog.

Interpersonal Theory Of Suicide In A Mild Traumatic Brain Injury Sample, Janelle Wee

Clinical Psychology Dissertations

Mild traumatic brain injury (mTBI) is associated with cognitive and emotional changes that may increase suicide risk. This study, grounded in the Interpersonal Theory of Suicide (IPTS), examined whether premorbid functioning moderates the relationship between cognitive functioning (working memory and processing speed) and suicidal desire (thwarted belongingness and perceived burdensomeness) in individuals with mTBI. Participants (n = 54) were drawn from a clinical neuropsychological sample and completed the WAIS-IV, TOPF, BDI-II, and Interpersonal Needs Questionnaire (INQ). Hierarchical moderated regression analyses were conducted across 100 multiply imputed datasets. Depressive symptoms were included as a covariate. Results showed that depressive symptoms …

Integrated Pest Management: State Infrastructure Status After 50 Yr Of Federal Support (1973 To 2023), Daren S. Mueller, Laura C. Iles, Carol L. Pilcher, Adam J. Sisson, Roger Magarey, Ryan Adams, Wanda I. Almodovar, Diane Alston, Patrick Beauzay, Ricardo Bessin, Mandy Bish, Mary Burrows, Alejandro Calixto, Rakesh Chandran, Jed B. Colquhoun, Mary Concklin, Amy J. Dreves, Peter C. Ellsworth, Paul D. Esker, James J. Farrar, Alfred Fournier, Daniel Frank, Kelly Hamby, George Hamilton, Anthony Hanson, Ann Hazelrigg, Natalie Hein-Ferris, David Held, James Jasinski, Heather M. Kelly, David Kerns, Miranda Kersten, Lauren Kerzicnik, Janet Knodel, Glen Koehler, Heidi Kratsch, Christian H. Krupke, Norman C. Leppla, Erin Lizotte, Casey Matney, Rebecca A. Melanson, Frannie Miller, Marion Murray, David Owens, Diane Plewa, Francis P. F. Reay-Jones, Silvia I. Rondon, Tom A. Royer, Philip A. Rozeboom, Hilary A. Sandler, Scott P. Schell, Marissa Schuh, Timothy Seipel, Danesha Seth Carley, Ashfaq Sial, Raghuwinder Singh, Damon L. Smith, Tim Stock, Glenn Studebaker, Adrianna Szczepaniec, Lisa Tewksbury, John Tooker, Adam J. Varenhorst, Amber Vinchesi-Vahl, Doug Walsh, Desiree Wickwar, Robert J, Wright, Simon Zebelo

Department of Entomology: Faculty Publications

Integrated pest management uses a variety of tools coupled with historical, current, and projected information for economical pest protection of crops and other resources while accounting for risk to humans and the environment. Following the 1972 US Federal IPM Policy, funding for integrated pest management programming has continued for 50+ years. However, multifaceted changes during this time have significantly affected state-level integrated pest management infrastructure, prompting a comprehensive survey to assess conditions, limitations, and growth potential of US integrated pest management programs. A survey was sent to 50 US states and 3 territories with integrated pest management programs in November …

Cutaneous Cytomegalovirus In Mixed Serostatus Kidney Transplant Patient, Dominic Finan, Vaibhav Garg, Lucjan Lang, Tricia Royer, Katherine Belden, Sherry Yang

Department of Dermatology and Cutaneous Biology Faculty Papers

Cutaneous cytomegalovirus infection is a rare but serious complication in solid organ transplant recipients. We present a 47-year-old male kidney transplant recipient with a chronic, nonhealing right lower extremity ulcer. Initial biopsies revealed septic vasculopathy, leading to treatment with sodium thiosulfate and antibiotics for suspected calciphylaxis. Despite regular wound care, the ulcer continued to worsen. After completing 6 months of cytomegalovirus prophylaxis, surveillance viral levels remained undetectable, but the ulcer progressed considerably. Worsening severity prompted hospitalization, during which cytomegalovirus viremia was detected, and an ulcer biopsy confirmed cytomegalovirus inclusion bodies. Antiviral therapy was reinitiated, resulting in rapid and sustained wound …

Reconciling Jekyll And Hyde: The Future Of Masculinity Research Within The Domestic Violent Extremism Context, Sam T. Hunter, Brett H. Neely, Carter Welch, Amanda N. Moeller

Department of Management: Faculty Publications

Violence among young men in the United States has escalated in recent years, leading to two contrasting perspectives of young men—either as (a) agentic aggressors or (b) by-products of societal shifts that have caused disadvantage. The first perspective characterizes men as entitled and reactionary, prone to aggression when their societal expectations are unmet. This view aligns with the frustration-aggression hypothesis in which unmet desires lead to hostile behaviors, particularly among individuals who perceive a loss of status and significance. Conversely, the second perspective views men as victims of rapid societal changes, such as job displacement, educational disparities, and shifting gender …

Immunohistochemical Evaluation Of Cd10 In Ameloblastoma And Dentigerous Cyst, Mennatalla M. Abougamila, Mona M. A. Ibrahim, Lawahez El. M. Ismail

Mansoura Journal of Dentistry

Objectives: Expression of CD10 in Ameloblastoma and Dentigerous cyst via immunohistochemistry. Material and methods: The current work was carried out on thirty-one tissues embedded in paraffin and treated with formalin of Ameloblastoma and fourteen cases of Dentigerous cyst (DC) were taken from the Faculty of Dentistry's Oral Pathology Department's archives, Mansoura University. Immunohistochemical reagents: Cluster of differentiation (CD10) (Autostainer Link 48) Clone 56C6 Ready-to-use monoclonal mouse antibody. The area percentage of stained cells from five randomly selected fields was examined under ×400 magnification in order to determine the tissue immunoreactivity for CD10. Results: In the present study, we revealed a …

Socket Preservation Using Autogenous Particulate Dentin In Combination With Liquid Platelet-Rich Fibrin Versus Bone Allografts After Surgical Extraction Of Impacted Lower Third Molar, Ali Mahmoud Mohamed Ali Elshafei, Wael Mohamed Ahmed Said Ahmed, Ziad Amr Elmissiry

Mansoura Journal of Dentistry

Objectives To evaluate and compare the efficacy of sticky tooth graft versus bone allografts used for socket preservation after the surgical extraction of horizontally impacted lower third molars. Materials and Methods Thirty patients with horizontally impacted lower third molars were randomly and equally divided into two groups; group I: 15 patients received dentin granules mixed with Liquid PRF (sticky tooth) in the socket after extraction, group II: 15 patients received bone allograft after extraction. Postoperative pain, edema and bone resorption were assessed. Bone resorption was evaluated using cone-beam computed tomography (CBCT) over a three-month period. Results There were statistically significant …

Effect Of Naringenin Cisplatin Combination On Apoptosis Of Human Tongue Squamous Cell Carcinoma Cell Line, Nahed Atef, Nancy Hussein, Mohamed Grawesh, Mohamed Anees

Mansoura Journal of Dentistry

Aim and Objectives: This research was aimed to evaluate the efficacy of a combination treatment comprising the natural compound Naringenin (NAR) and the chemotherapeutic agent Cisplatin (CP) regarding the reduction of cell viability and the induction of apoptosis in human TSCC (HNO-97) and normal oral epithelial cell (NOEC) lines. Material and Methods: The cytotoxicity and IC50 of NAR, CP, and their combinations were evaluated using the MTT assay. The expression levels of the apoptotic marker genes p53 and caspase-3 were assessed using RT-PCR. Western blot analysis was carried out to assess the protein expression levels of the apoptotic markers Bax …

Evaluation Of Two- Implant Assisted Mandibular Overdentures Of Cobalt Chromium Vs. Peek Combined Denture Bases Regarding Occlusion And Patient Satisfaction: A Within-Subject Study, Khaled M. Diaa, Noha H. El-Shaheed, May A. Hagag, Fatma A. El-Waseef

Mansoura Journal of Dentistry

Objectives The purpose of this within-patient study was to compare two implant-assisted overdentures (IAOs) reinforced either with polyether-ether ketone (PEEK) or cobaltchromium (CO-CR) regarding the percentage of occlusal contact using a digital occlusion analysis system (Occlusense) and to assess patient satisfaction and Oral Health–Related Quality of Life (OHRQoL). Subjects and methods Ten complete edentulous subjects were eligible. All patients were delivered two mandibular implant-assisted overdentures with two reinforcement materials, CO-CR (group I) and PEEK (group II).The mandibular overdentures were retained to the underlying implant fixtures by ball and socket attachments. Patients were evaluated three months after each overdenture use. For …

Assessment Of Sox2 Expression As A Tumor Stem Cell Marker In Ameloblastoma And Dentigerous Cyst, Haneen Mahmoud Zeen El-Abdeen, Noha Ahmed Mansour, Sherif Yousef Elnagdy, Mohamed Abdel-Monem Tawfik

Mansoura Journal of Dentistry

Objective: The pathogenesis of odontogenic lesions remains unclear; however, a probable explanation could mean the presence of tumor stem cells (TSCs). The preservation of stem cells during early dental development is governed by many transcription factors, including sex-determining region Y (SRY)-box 2 (SOX-2). Numerous studies observed the increased expression of SOX2 in various benign and malignant tumors as its impact on tumorigenesis varies according to tumor type. This research aims to determine the predictive importance of the SOX2 stem cell marker by evaluating its immunoexpression in ameloblastoma (Ab) and dentigerous cyst (DC). Materials and Methods: Twenty-Four samples were part of …

Comparative Clinical Evaluation Of Healing Of Surgically Depigmented Gingiva By Application Of Human Placental Extract And Hyaluronic Acid, Hanaa Ibrahim Mostafa Sedeek, Islam Hussien Anwar Abdelfattah Kandil, Mohamed Mahmoud Anees, Mohammed Mostafa El Shennawi

Mansoura Journal of Dentistry

Objective The goal of the present research was to assess the outcomes of the adjunctive application of human placental extracts (HPE) and hyaluronic acid (HA) on the healing of gingival tissue following surgical depigmentation. Patients and methods Thirty patients complaining from gingival hyperpigmentation were divided to one positive control and two study (HA & HPE) groups. The three groups underwent surgical depigmentation by scraping and application of non-eugenol periodontal packs. In addition HA and HPE were applied after surgical depigmentation to the twice study sets respectively. Visual analog scale (VAS) was recorded at 24 & 72 hours, 10, 20 & …

Assessment Of Serum And Salivary Levels Of Synuclein-Γ As A Diagnostic Biomarker In Oral Squamous Cell Carcinoma Patients, Aya Yasser, Shadi Awny, Shaimaa R. Hendawy, Mohamed M. Anees

Mansoura Journal of Dentistry

Objective: The objective of the current study was to assess the serum and salivary levels of Synuclein-γ (SNCG) in Oral squamous cell carcinoma (OSCC) cases. Materials and Methods This study was conducted on 60 subjects (30 patients with OSCC and 30 subjects served as healthy controls (HCs)). Serum and salivary levels of Synuclein-γ using enzyme linked immunosorbent assay (ELISA) was determined for all participants and the study group was compared versus the healthy control. Results The serum and salivary levels of Synuclein-γ were significantly increased in cases with OSCC than in HCs p-values (

Digital Versus Functional Pick-Up Techniques For Two-Implant Retained Mandibular Overdentures: A Crossover Study, Aya E. Elnagar, Khaled M. Zahran, Heba Abo-Elfetouh Elsheikh, Fatma Ahmad El Waseef

Mansoura Journal of Dentistry

Objective: To evaluate two pick-up techniques—digital and functional—for two-implant retained mandibular overdentures with respect to occlusal force distribution using the digital occlusal analysis system (Occlusense®). Patients and Methods: Twenty completely edentulous, healthy patients were selected from the Prosthodontics Department, Faculty of Dentistry, Mansoura University. Conventional complete dentures were first constructed, followed by placement of two implants in the mandibular canine regions using a guided surgical approach and a delayed loading protocol. For each patient, two sets of digitally fabricated mandibular overdentures were constructed. Patients were randomly assigned into two equal groups: Group I received digital complete overdentures with digitally created …

Greenhouse Management For The Smaller Structure--Educational And Hobby, Stacy A. Adams

Department of Agronomy and Horticulture: Faculty Publications

Greenhouses used for teaching or by hobbyist are smaller than those used for commercial production or found in the retail environment. Structural materials, covering, mechanical equipment, and control systems often are packaged as a kit made available through greenhouse suppliers. Supplier construction services may not be available, in which buyers must use local contractors to complete the installation. Greenhouses are unique structures that differ greatly from sheds or other outbuildings. They have coverings that allow maximum light transmittance, protected from UV degradation, and can handle wide inside to outside temperature extremes. This extension circular provides valuable information on the character, …

Terrarium- An Ecosystem In A Jar, Stacy A. Adams

Department of Agronomy and Horticulture: Faculty Publications

STEM education is supported through hand's-on activities in the classroom. Content understanding and reaffirmation of knowledge is supported through this informative STEM-Quick card that teachers or extension educators can distribute to participants for reference. Terrariums provide an example of a closed ecosystem where water and carbon cycling is demonstrated and plant growth can be observed. This card presents the steps to building and caring for an easy to create terrarium.

Distribution And Ecology Of The Cedar Keys Mole Skink (Plestiodon Egregius Insularis), Kevin M. Enge, Louis A. Somma, Paul E. Moler, Travis M. Thomas, Matthew T. Fedler, John M. Matter, Dennis C. Haney

Papers in Herpetology

We conducted surveys for the Cedar Keys Mole Skink, Plestiodon egregius insularis (Mount), during 1989– 1999 and 2015–2024, examined museum vouchers, and compiled personal observations from others to determine the status and distribution of this subspecies, which has the smallest geographic distribution of the five subspecies and is being considered for federal listing. We observed Cedar Keys Mole Skinks on Airstrip Island, Atsena Otie, Cedar Point, Deer Island, North Key, Scale Key, Seahorse Key, Snake Key, and possibly Dog Island. We have anecdotal reports of Mole Skinks on Way Key, which contains the most potential habitat and is the main …

Transport Of Nutrients By Overland Flow On Sites Containing Beef Cattle Manure, John E. Gilley, Ryan P. Mcgehee, Kenneth M. Wacha

Department of Agricultural and Biological Systems Engineering: Faculty Publications

In an inductive metastudy, we investigated the effects of varying rates of overland sheet flow on the transport of phosphorus (P) and nitrogen (N) from sites containing beef cattle manure. The analyzed data were collected during previously reported field rainfall simulation investigations conducted on cropland sites and a beef cattle feedlot in the US state of Nebraska. During the experiments, inflow was incrementally added to the top of the experimental plots to simulate runoff rates occurring at greater downslope distances. Runoff rates on the experimental plots ranged from 2.9 to 22.9 Lmin⁻¹, and the maximum equivalent downslope distances …

Crop2cloud Platform: Real-Time Data Integration For Agricultural Water Monitoring, Bryan Nsoh, Abia Katimbo, Kendall Dejonge, Wei-Zhen Liang, Hongzhi N. Guo, Yufeng Ge, Derek M. Heeren, Yeyin Shi, Xin Qiao, Daran R. Rudnick, Hope Njuki Nakabuye, Birru Girma, Isa Kabenge, Joshua Wanyama

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Efficient water management is vital for sustainable agriculture, yet integrating real-time data for precise irrigation remains a challenge. This study designed the Crop2Cloud (C2C) platform, a system that leverages advanced sensors using Internet of Things (IoT), edge and cloud computing techniques, and computed Water Stress Indices (WSIs) and machine learning models (i.e., fuzzy logic), to provide scalable and real-time irrigation decisions. The C2C platform aggregates several data including Volumetric Water Content (VWC) from TDR sensors (Acclima Inc., US) installed at four multiple depths, canopy temperatures (Tc) measured by Infrared Radiometers (IRTs) (Apogee Instruments, US), as well as weather information and …

Behavioral Insights Impacting Preweaning Mortality, Md Towfiqur Rahman, G. A. Rohrer, S. R. Sharma, Y. Shi, S. M. Leonard, Tami M. Brown-Bandl

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Conclusions

This study investigated the average time spent on posture behaviors (lying, kneeling, sitting, standing) of sows by analyzing the effects of time segments, farrowing crate types, parity, heat lamp configurations, and mortality groups. Sow posture behaviors were significantly influenced by mortality, parity, crate type, heat lamps, and day category. High mortality sows spent less time lying and more time standing events. Parity 1, 2, 3 sows were more active, spending more time kneeling in transitions, lying, and sitting events. Sows in TSL crate had longer lateral right lying and standing events, while ESCSL crates sows had longer sitting events. …

Firelog: An Open-Source, Low-Cost System For Temperature Logging During Wildland Fires With High Spatial And Temporal Resolution, Nipuna Chamara, Yufeng Ge, Sabrina E. Russo

Department of Agricultural and Biological Systems Engineering: Faculty Publications

Measuring flame, air, and soil temperatures during wildland fires, including wildfires and controlled burns in land management contexts, is crucial for research and applications in fire ecology, safety, and management in a wide array of ecosystems, from grasslands to forests. However, open-source and commercial systems are needed for measuring and logging flame and air temperatures that are user-friendly, economical, modular, and customizable. This paper details the design, development, and validation of the FireLog system. Laboratory validation experiments demonstrated high measurement accuracy, with a minimum coefficient of determination (R2) of 0.98 and the highest observed root mean square error (RMSE) of …

Enhancing Gender-Responsiveness In Agriculture, Aquatic, And Natural Resources (Aanr) Through Gender-Analysis Framework And Monitoring And Evaluation (Game) Tools, Blesshe L. Querijero, Lei A. Pangilinan-Jamolin, Anne Margarette M. Balog, Jane M. Bahil

Journal Article

Gender issues are still observed in the Agriculture, Aquatic, and Natural Resources (AANR) Sector. There have been several programs and initiatives that aimed to address challenges related to gender, however, traditional gender norms greatly influence Filipinos. To continuously address these issues, the DOST- PCAARRD funded a two-year project entitled Gender analysis framework and monitoring and evaluation tools in gender-responsive AANR development projects (GAME tools in AANR), with UPLB as the implementing agency. It started in June 2022 and ended in May 2024. The project aimed to promote gender- responsiveness in the AANR sectors by creating a guidebook for the AANR …

The Future Of Personalized Medicine In Saudi Arabia: Opportunities And Challenges, Wedad A. Mawkili

Saudi Medical Journal

Personalized medicine is a healthcare approach that designs treatment plans of each patient, considering genetic, environmental, and lifestyle factors. This model leverages genomic information, advanced diagnostics, and data analytics to predict disease risk, optimize prevention strategies, and provide customized treatments. In Saudi Arabia, personalized medicine is gaining momentum, driven by the country’s Vision 2030 initiative, which aims to transform the healthcare sector by integrating advanced medical technologies and improving healthcare delivery. The Kingdom has made significant strides in genomics and bioinformatics, with initiatives such as the Saudi Human Genome Program and advancements in institutions i.e., King Faisal Specialist Hospital and …

Synthesis And Characterization Of Eco-Engineered Hollow Fe2o3/Carbon Nanocomposite Spheres: Evaluating Structural, Optical, Antibacterial, And Lead Adsorption Properties, Islam Gomaa

Nanotechnology Research Centre

This work presents a facile mechano-thermal route for the synthesis of carbon-decorated, hollow, mesoporous α-Fe2O3 microspheres. Comprehensive characterization (XRD, XPS, FT-IR, SEM/EDX, TGA, zeta-potential) confirmed the formation of phase-pure hematite with nanoscale crystallites (~19 nm), substantial residual surface carbon (~40 wt%) consistent with Fe–O–C linkages, and a positive surface charge (+15.9 mV). The hierarchical hollow/mesoporous architecture enables fast ion transport and provides extensive interior binding sites, resulting in rapid Pb(II) uptake that reaches 92% removal in ≈15 min at pH 5.0. The adsorption follows a Langmuir isotherm (qmax ≈ 70.6 mg/g) and pseudo-second-order kinetics, indicative of chemisorption coupled to efficient …

Holos, María Álvarez Espada

Grado en Diseño de Interiores

El proyecto deberá resolver la articulación de un programa habitacional y de taller o despacho de un profesional a elección del alumno, con la sensibilidad de encontrarse en un edificio emblemático del racionalismo madrileño. Para precisar los objetivos de la transformación interior los alumnos podrán asociar a un personaje en concreto la interpretación a realizar.

Se deberán tomar como referencias de partida las características materiales y de diseño propias de los interiores de aquel periodo, actualizadas a los parámetros de confort contemporáneos y operando, en las modificaciones espaciales interiores, definiendo la organización interior, sus acabados, su iluminación y su mobiliario. …

Exploring Pre-Kindergarten Teachers' Experiences With Engaging Black Boys In Literacy Instruction, Airreia Faith Pierce

Walden Dissertations and Doctoral Studies

Recent studies convey the critical need for teachers to use culturally relevant pedagogy (CRP) to engage Black boys in literacy instruction. The problem was that in the Sunshine School District (SSD: a pseudonym), pre-kindergarten (pre-K) teachers found it challenging to engage Black boys in literacy instruction. Framed by Ladson-Billings’s CRP, the purpose of this basic qualitative study was to explore how pre-K teachers engaged Black boys in literacy instruction and how teachers’ instructional practices aligned with CRP. To collect data, a purposeful sample of 11 pre-K teachers from SSD participated in semistructured interviews. Thematic analysis, using open coding, was applied …

Up Los Baños Journal, Volume 23 - Regular Issue

U.P. Los Baños Journal

UP Los Baños Journal, Volume 23 - Regular Issue

Maternal Nutriture And Concurrent Wasting And Stunting Among Under-Five Children: A Systematic Review, Aileen R. De Juras, Rodesa N. Forcadilla, Mary Ann M. Ingua, Angeline A. Bueno

Journal Article

Concurrent wasting and stunting (WaSt) is a severe form of child undernutrition associated with increased morbidity and mortality. While maternal nutritional status independently influences wasting and stunting, its role in their co-occurrence among children remains insufficiently explored. This systematic review aimed to examine associations between WaSt and maternal nutritional status and related determinants, as well how WaSt is defined, measured, and reported. It was conducted in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines and registered with PROSPERO International Prospective Register of Systematic Reviews (CRD42024493969). Structured searches in Scopus, Web of Science, and Cochrane databases were …

Initial Growth Of Inclusive Knowledge And Leadership Practices By Science Education Teacher-Leaders, Elizabeth B. Lewis, Elizabeth Hasseler, Rachel Benzoni, Gina S. Matkin, Wendy Smith, Daniel R. Claes, David M. Harwood, L. J. Mcelravy, Dawn Jaramillo

Department of Teaching, Learning, and Teacher Education: Presentations

Slies of a presentation given at the 2025 Annual International National Association for Research in Science Teaching (NARST) Conference on the initial results from an iterative program design for educating science education leaders.

Cover Crops Can Reduce Greenhouse Gas Emissions From No-Till Maize In Southern Brazil: Insights From A Long-Term Field Experiment, Guilherme Rosa Da Silva, Adam J. Liska, Cimélio Bayer

Adam Liska Papers

Brazil is one of the countries that has the most agricultural area under no-till (NT) management. This research study aims to evaluate life-cycle greenhouse gas (GHG) emissions from maize (M) grain production in agroecosystems that used different cover crops under NT management in southern Brazil. The data for this study were from a long-term 41-year field experiment in southern Brazil. The long-term experiment evaluated the effects of fallow (F) and cover crops (oat (O), vetch (V), cowpea (B), pigeon pea (P), and lablab (L)) on nitrous oxide and methane emissions and soil carbon (C) sequestration in maize agroecosystems. Five cropping …

Inactivation Of Zika Virus With Hydroxypropyl-Beta-Cyclodextrin, Cory R. Hewitt, Nicholas J. Wixon, Arthur Gallegos, You Zhou, Victor C. Huber, M. Scott. Killian

Nebraska Center for Biotechnology: Faculty and Staff Publications

Background/Objectives: Zika virus (ZIKV) infection is associated with life-threatening diseases in humans. To date, there are no available FDA-approved therapies or vaccines for the specific treatment or prevention of ZIKV infection. Variation in the ZIKV envelope protein (Env), along with its complex quaternary structure, presents challenges to synthetic approaches for developing an effective vaccine and broadly neutralizing antibodies (bnAbs). We hypothesized that beta-cyclodextrin (BCD) could be used to uniquely inactivate infectious ZIKV without disruption of Env.

Methods: ZIKV was propagated in Vero cells and admixed with BCD. The BCD-treated ZIKV was evaluated for infectivity using immunofluorescence and quantitative …