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Articles 34441 - 34470 of 40091
Full-Text Articles in Entire DC Network
Herbicide Leaching Under Tilled And No-Tillage Fields, Timothy J. Gish, Adel Shirmohammadi, Raviraj Vyravipillai, Brian J. Wienhold
Herbicide Leaching Under Tilled And No-Tillage Fields, Timothy J. Gish, Adel Shirmohammadi, Raviraj Vyravipillai, Brian J. Wienhold
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The effect of no-tillage practices on water quality exiting the root zone of deep, well-drained fields is largely unknown. This project was initiated to determine herbicide leaching characteristics as influenced by tillage practice and herbicide formulation. The research site consisted of four adjacent (0.25-ha) fields, two fields each dedicated to either tilled or no-tillage management. One field in each tillage regime received a controlled-release formulation of atrazine [6-chloro-N-ethyl- N'-(1-methylethyl)-1,3,5-triazine-2,4-diamine] and alachlor [2-chloro- N-(2,6-diethylphenyl)-N-(methoxymethyl)-acetamide, starch encapsulated], while the others received standard herbicide formulations of atrazine and alachlor. Both herbicide formulations were annually applied at the same rate: 1.7 kg ha‒1 …
Genetic And Phenotypic (Co)Variances For Growth And Carcass Traits Of Purebred And Composite Populations Of Beef Cattle, K. E. Gregory, L. V. Cundiff, R. M. Koch
Genetic And Phenotypic (Co)Variances For Growth And Carcass Traits Of Purebred And Composite Populations Of Beef Cattle, K. E. Gregory, L. V. Cundiff, R. M. Koch
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
Least squares means, genetic (σg), and phenotypic (σp) standard deviations, and phenotypic coefficients of variation (CV) were estimated on an age-constant basis for growth, carcass, and meat traits of castrate males from 12 breed groups combined, for 9 purebreds combined, and for the F3 generation of three composite populations combined to which the nine purebreds contributed. Also, heritabilities ( h2) and genetic ( rg) and phenotypic ( rp) correlations were estimated among growth, carcass, and meat traits for all breed groups combined involving 1,594 individuals that were the progeny of …
Random Roughness Assessment By The Pin And Chain Method, John E. Gilley, E. R. Kottwitz
Random Roughness Assessment By The Pin And Chain Method, John E. Gilley, E. R. Kottwitz
Department of Agricultural and Biological Systems Engineering: Faculty Publications
Surface microrelief is frequently characterized using random roughness factors (RRF) defined by Allmaras et al. (1966). Random roughness factors are usually measured using a pin roughness meter or laser. Saleh (1993) recently proposed the chain method as a relatively simple, fast, and inexpensive technique for characterizing surface microrelief. The chain method is based on the principle that as a chain of given length is placed across a surface, the horizontal distance covered by the chain will decrease as surface roughness increases. Reductions in chain length caused by surface roughness are described as Saleh roughness factors (SRF).
In this study, RRF …
Partridges, Quails, Francolins, Snowcosks, And Guineafowl Status Survey And Conservation Action Plan, 1995-1999, Philip J. K. Mcgowan, Simon D. Dowell, John P. Carroll, Nicholas J. Aebischer, Wpa/Birdlife/Iucn-Ssc Partridge, Quail And Francolin Specialist Group
Partridges, Quails, Francolins, Snowcosks, And Guineafowl Status Survey And Conservation Action Plan, 1995-1999, Philip J. K. Mcgowan, Simon D. Dowell, John P. Carroll, Nicholas J. Aebischer, Wpa/Birdlife/Iucn-Ssc Partridge, Quail And Francolin Specialist Group
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
Executive Summary
This Action Plan covers the world's partridges, quails, francolins, snowcocks and guineafowl, a group of birds from the order Galliformes comprising 141 species according to the most recent taxonomic consideration (Sibley & Monroe 1990), plus one further species newly discovered in 1991 (Dinesen et al. 1994). These birds attract considerable interest throughout the world on account of their importance in ornamental collections, as food sources, as sporting quarry, as indicators of the health of ecosystems and as objects of great beauty. The objectives of this document are to identify the most threatened species and sub-species within this group …
Annual Review Of The World Pheasant Association 1994/1995, World Pheasant Association
Annual Review Of The World Pheasant Association 1994/1995, World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
Editor's preface, David Jenkins
President's foreword, Cheng Tso-hsin
Annual report of Council 1994/95
Chapter reports
Pheasant Specialist Group, Peter J. Garson
Habitats used by Elliot's Pheasant in the Leigong Mountain Nature Reserve, Ding Ping, Yang Yuewei, Liang Wei, Jiang Shiren, and Zhuge Yang
Distribution and conservation status of galliforms in the Gaoligongshan Region, Han Lianxian
Pipar report, Rahul Kaul
Partridge, Quail, and Francolin Specialsit Group, Simon D. Dowell
Ecological investigations of Chukar Partridge in northwest China, Liu Naifa
A field project to understand the habitat use of the Swamp Francolin in northern India, Perwez Iqbal, Philip J. K. McGowan, and …
Megapode Newsletter 9(1)-10(1/2) (1995-1998), World Pheasant Association, Birdlife International, Ssc Megapode Specialist Group
Megapode Newsletter 9(1)-10(1/2) (1995-1998), World Pheasant Association, Birdlife International, Ssc Megapode Specialist Group
Galliformes Specialist Group and Affiliated Societies: Newsletters
Megapode Newsletter from May 1995, May 1996, November 1996, and February 1998.
Megapode Newsletter 9(1)-10(1,2),12(1) (1995-1998), World Pheasant Association
Megapode Newsletter 9(1)-10(1,2),12(1) (1995-1998), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
No abstract provided.
Rock-A-Bye Baby: When Determining How And Where The Cradle Should Fall, Nebraska "Blows It"—An Examination Of Unwed Fathers' Rights Regarding Their Children And Nebraska's Infringement Of Those Rights, Kevin T. Lytle
Nebraska Law Review
This Note chronicles the development of putative fathers' rights in the law, as recognized in recent Supreme Court cases and synthesizes those varied holdings into the Supreme Court's current and probable future position. It analyzes how these holdings have been applied in recent state court decisions and discusses the development of Nebraska's statutory law and case law on this topic. This Note also analyzes how Nebraska's law conforms with or violates the standards set by the Supreme Court and other state courts. Finally, it recommends changes that should be made to Nebraska law as a means of recognizing the further …
Dna Evidence In Criminal Trials: A Defense Attorney's Primer, Richard A. Nakashima
Dna Evidence In Criminal Trials: A Defense Attorney's Primer, Richard A. Nakashima
Nebraska Law Review
I. Introduction
II. Scientific Background
III. Forensic Analysis of DNA Samples
IV. Analysis of the Statistical Significance of the DNA Profile
V. Admissibility vs. Weight of Evidence
VI. Challenging the Admissibility of DNA Evidence under Frye
VII. Potential Problems with DNA Analysis ... A. False Negatives and False Positives ... B. Human Error ... C. Band Shifting ... D. Quality of the DNA Sample
VIII. How to Challenge the Weight of DNA Evidence ... A. False Positives and Laboratory Error Rates ... B. Check for Possible Band Shifting ... C. Attack the Statistical Analysis
IX. Recent Developments
X. Conclusion
Nuisance Law: The Morphogenesis Of A Historical Revisionist Theory Of Contemporary Economic Jurisprudence, George P. Smith Ii
Nuisance Law: The Morphogenesis Of A Historical Revisionist Theory Of Contemporary Economic Jurisprudence, George P. Smith Ii
Nebraska Law Review
I. Introduction
II. Toward a New Ethic in the Law of Property ... A. The Comprehensive Approach ... B. A Sociobiological Connection? ... C. Economic Liberties under Siege: The Need for Ordered Liberty … D. Formulating a New or Revitalized Economic Ethic of Property
III. The Origins of Balancing ... A. The Aristotelian Mean: The Classical Balancing ... B. Biblical Beginnings ... 1. The Golden Rule ... a. Rawls and a Principle of Intergenerational Justice ... C. Early Christian Fathers and Economics ... 1. Satisfying Economic Needs ... D. The Formative Influences of Lord Coke, Holmes, Pound, and Posner
IV. …
Women In Development: The Need For A Grassroots Gender Planning Approach, Darcy L. Boellstorff
Women In Development: The Need For A Grassroots Gender Planning Approach, Darcy L. Boellstorff
Nebraska Anthropologist
While the recognition of the roles of women in Third World society is increasing, the adequate operational frameworks for including the concerns of women involved in development planning has not kept pace. Models generally used in planning ignore the importance of gender in social structures. Development in the Third World has historically provided little benefit to women, generally leaving them in a more vulnerable social and economic position. Gender planning holds the key to the implementation of successful development programs in Third World communities by recognizing different social relationships between women and men occur from society to society and are …
The Native American Grave Protection And Repatriation Act: A Necessary But Costly Measure, Tina F. Brown
The Native American Grave Protection And Repatriation Act: A Necessary But Costly Measure, Tina F. Brown
Nebraska Anthropologist
The Native American Grave Protection and Repatriation Act has had an immense impact on Amencan Anthropology. NAGPRA protects NatiVe Amencan skeletal remains and burial goods by ordenng those held for research or display retumed, and by restricting future excavations. In the course of its enactment, it has divided anthropologists on the basis of moral convictions and research priorities. Its history is long, and its future is uncertain.
Summer 1995 Ethnographic Field School: An Overview, Emilia Gonzalez-Clements
Summer 1995 Ethnographic Field School: An Overview, Emilia Gonzalez-Clements
Nebraska Anthropologist
A five-week summer field school was conducted in the northern Sierra Oriental of northeast Mexico. Ten social science including anthropology) and one engineering student worked as a field team studying the impacts of new economic development initiatives on a rural ejido and participated in a small-scale irrigationlwater management project. The field school was directed by Emilia Gonzalez-Clements, applied anthropologist, and L. Davis Clements, Professor of Biological Sciences Engineering/Chemical Engineering/ Animal Science at the University of Nebraska-Lincoln.
Course requirements included a readings packet, field journal, 6-page paper and 2-page report. Paper topics were selected by students in areas of their professional …
Environmental Resources And Range Size: A Study Of Modern And Ancient Hunter Gatherers, George Macdonell
Environmental Resources And Range Size: A Study Of Modern And Ancient Hunter Gatherers, George Macdonell
Nebraska Anthropologist
Archaeological surveys should be designed to better understand how past people interacted with their environment. An accurate survey should cover a group's range size in order to get a true representation of the diversity of the group's activities. Range size is defined as the total area of land over which a group moves and procures resources. Past studies of hunter gatherer range have focused on stylistic boundaries of pottery and stone tools. Optimal Foraging Theory has been used to better understand hunter gatherer territoriality and it can be used as a frame of reference for understanding range size as well. …
Effects Of 17Β-Estradiol On Distribution Of Pituitary Isoforms Of Luteinizing Hormone And Follicle-Stimulating Hormone During The Follicular Phase Of The Bovine Estrous Cycle, F. N. Kojima, Andrea S. Cupp, T. T. Stumpf, D. D. Zalesky, M. S. Roberson, L. A. Werth, M. W. Wolfe, Roger J. Kittok, H. E. Grotjan, J. E. Kinder
Effects Of 17Β-Estradiol On Distribution Of Pituitary Isoforms Of Luteinizing Hormone And Follicle-Stimulating Hormone During The Follicular Phase Of The Bovine Estrous Cycle, F. N. Kojima, Andrea S. Cupp, T. T. Stumpf, D. D. Zalesky, M. S. Roberson, L. A. Werth, M. W. Wolfe, Roger J. Kittok, H. E. Grotjan, J. E. Kinder
Department of Animal Science: Faculty Publications
The objective of this study was to examine the influence of 17β-estradiol (E2) on distribution of LH and FSH isoforms during the follicular phase of the bovine estrous cycle prior to the preovulatory surges of LH and FSH. On Day 16 of the estrous cycle (Day 0 = estrus), intact controls (CONT; n = 4) were treated with prostaglandin F2α (PGF2α) to induce luteal regression and initiation of the follicular phase. Other cows were also treated with PGF2α and either ovariectomized (OVX; n = 5) or ovariectomized and given E2 implants (OVXE; n …
From Farm To Market Technicallrifonnation For The Commercial Vegetable Grower, Laurie Hodges
From Farm To Market Technicallrifonnation For The Commercial Vegetable Grower, Laurie Hodges
Department of Agronomy and Horticulture: Faculty Publications
The preliminary program and pre-registration form for the Nebraska Vegetable Conference is found in this issue. It is very important for you to participate in the elections for the Nebraska Fruit & Vegetable Growers Association. The officers of this Association represent Im! to UNL, Cooperative Extension, the Nebraska Dept. of Ag, and the Unicameral. There are many people interested in what you have to say, and this is an opportunity for you to express yourself directly. The Regional Directors serve as resource people in the various parts of Nebraska.
Cropwatch No. 94-24-2, Dec. 16, 1994, Lisa Brown Jasa
Cropwatch No. 94-24-2, Dec. 16, 1994, Lisa Brown Jasa
Crop Watch (1994–2005)
Inside
1994 index .......................... 164
Grants for producers .......... 166
CropWatch order form........ 167
Annual survey .................... 167
Ard News December 1994
Agricultural Research Division: News and Annual Reports
CONTENTS:
SEASON'S GREETINGS
INDIRECT COST RECOVERY BY ARD UNITS DURING FY 1994
USDA REORGANIZATION
NEW ARD PUBLICATIONS
DEVELOPMENT OF GRADUATE EDUCATION PROGRAMS
ARD ADMINISTERED GRANT AND AWARDS PROGRAMS
INDIRECT COSTS: MYTHS, FACTS AND FACILITIES
SPECIAL RESEARCH GRANT PROGRAM A WARDS
GRANTS AND CONTRACTS RECEIVED OCTOBER AND NOVEMBER, 1994
NEW OR REVISED PROJECTS
PROPOSALS SUBMITTED FOR FEDERAL GRANTS
Acetato De Molibdeno Como Precursor De Molibdeno Carburizado Soportado Sobre Alumina: Un Catalizador Para Reacciones De Hidrogenacion, Lucia M. Petkovic, Ruben D. Parra, Manuel Márquez, Gustavo Larsen
Acetato De Molibdeno Como Precursor De Molibdeno Carburizado Soportado Sobre Alumina: Un Catalizador Para Reacciones De Hidrogenacion, Lucia M. Petkovic, Ruben D. Parra, Manuel Márquez, Gustavo Larsen
Department of Chemical and Biomolecular Engineering: Faculty Publications
The stability of the Al,0,-supported dimers under relatively high ccirperatures and hydrocarbon/H, (carburizing) atmospheres is reported Also, it has been developed a new method for Mo,''* loading of the support based on the wet impregnation of the latter.
Since carbided Mo is active for hydrogenations, the isobutene/H2 has been chosen as the probé reaction. ALO,- supported Mo,(Ac)^ results in a catalyst active for isobutene hydrogenation after trcatment with a H,/C,H^ 2:1 mixture at 753 K.
The Prairie Naturalist Volume 26, No. 4. December 1994
The Prairie Naturalist Volume 26, No. 4. December 1994
The Prairie Naturalist
REPRODUCTION OF RING-NECKED PHEASANTS IN IOWA ▪ T Z. Riley, J. B. Wooley, Jr. , and W. B. Rybarczyk
DIETARY COMPARISONS OF ADULT MALE COMMON GRACKLES, RED-WINGED BLACKBIRDS, AND YELLOW-HEADED BLACKBIRDS IN NORTH CENTRAL NORTH DAKOTA ▪ H. J. Homan, GM. Linz, W. J. Bleier, and R. B. Carlson
ECOGEOGRAPHY OF SOUTHERN BOG LEMMING AND MEADOW VOLE IN NORTH CENTRAL KANSAS ▪ T. L. Welker and J. R. Choate
SUMMER AND FALL FOOD HABITS OF COYOTES IN SOUTHWESTERN NORTH DAKOTA ▪ T. L. Lewis, W. F. Jensen, K. A. Keehr, and R. W. Seabloom
MOVEMENT PATTERNS OF WHITE-TAILED DEER AT …
Odontotaenius Floridanus New Species (Coleoptera: Passalidae): A Second U.S. Passalid Beetle, Jack C. Schuster
Odontotaenius Floridanus New Species (Coleoptera: Passalidae): A Second U.S. Passalid Beetle, Jack C. Schuster
Entomology Papers from Other Sources
Larvae and adults of Odontotaenius floridanus New Species are described from the southern end of the Lake Wales Ridge in Highland Co., FL. This species may have evolved as a population isolated during times of higher sea level from the mainland species O. disjunctus (Illiger) or a close common ancestor. It differs notably from O. disjunctus in having much wider front tibiae and a less pedunculate horn. A key is given to the species of the genus.
Son descritas las larvas y adultos de Odontotaenius floridanus Nueva Especie del extremo sur de Lake Wales Ridge, en Highland Co., Florida. Esta …
Water Current, Volume 26, No. 6, December 1994
Water Current, Volume 26, No. 6, December 1994
Water Current Newsletter
Waste Management Problem Focus of '95 Seminars
From the Director
Policies Topic of '95 Conference
Glossary of Water-Related Terms
Researchers Try to Outsmart Hardy Pests
Reflections on a Year Well Spent
Scientific Conference "In the Bush"
Symposium Spurs Water Discussion
Correlation Between Precolonization Of Trigeminal Ganglia By Attenuated Strains Of Pseudorabies Virus And Resistance To Wild-Type Virus Latency, L. M. Schang, G. F. Kutish, Fernando A. Osorio
Correlation Between Precolonization Of Trigeminal Ganglia By Attenuated Strains Of Pseudorabies Virus And Resistance To Wild-Type Virus Latency, L. M. Schang, G. F. Kutish, Fernando A. Osorio
Nebraska Center for Virology: Faculty Publications
We compared the levels of latent pseudorabies virus (PRV) DNA in trigeminal ganglia (TG) of pigs after intranasal inoculation of different PRV strains by using quantitative DNA PCR. The extent of colonization attained in each case varied significantly according to the type of strain and inoculum dose, wild-type (WT) PRV being the most efficient strain in colonizing TG. When groups of pigs representing different levels of precolonization of TG with an attenuated PRV strain were challenged with WT PRV, it became evident that there is a statistically significant inverse correlation between the extent of precolonization attained by an attenuated PRV …
Host Specificity Of Rhabdochona Canadensis (Nematoda: Rhabdochonidae) In Nebraska, Michael A. Barger, John J. Janovy Jr.
Host Specificity Of Rhabdochona Canadensis (Nematoda: Rhabdochonidae) In Nebraska, Michael A. Barger, John J. Janovy Jr.
John J. Janovy, Jr. Publications
Intermediate and definitive host specificity of Rhabdochona canadensis in Nebraska were investigated. Mayfly nymphs Trichorythodes sp. and Caenis sp. were found to serve as experimental intermediate hosts. Development inside the nymphs required approximately 10 days, with the worms passing through two molts and then becoming encapsulated in the hemocoel as infective third-stage juveniles. Survey data revealed that only the red shiner Cyprinella lutrensis serves as definitive host for R. canadensis in nature. Laboratory infections of Notropis dorsalis, N. stramineus, and Fundulus zebrinus. all of which were uninfected in nature, were attempted to determine if observed specificity was due …
Second Intermediate Host-Specificity Of Haematoloechus Complexus And Haematoloechus Medioplexus (Digenea: Haematoloechidae), Scott D. Snyder, John J. Janovy Jr.
Second Intermediate Host-Specificity Of Haematoloechus Complexus And Haematoloechus Medioplexus (Digenea: Haematoloechidae), Scott D. Snyder, John J. Janovy Jr.
John J. Janovy, Jr. Publications
Second intermediate host-specificity was examined for two species of the frog lung fluke genus Haematoloechus. Nine species of freshwater arthropods were exposed to cercariae of H. complexus and H. medioplexus. Metacercariae of H. complexus developed in all arthropod species used. Metacercariae of H. medioplexus developed only in anisopteran odonate naiads. This difference in host utilization may have epizootiological implications. The potential development of H. complexus in a greater number of arthropods than H. medioplexus may increase the chances of ingestion of H. complexus by an anuran host. The range of arthropods parasitized by H. complexus indicates that host-specificity …
Phylogenetic Systematic Analysis Of The Trichostrongylidae (Nematoda), With An Initial Assessment Of Coevolution And Biogeography, Eric P. Hoberg, J. Ralph Lichtenfels
Phylogenetic Systematic Analysis Of The Trichostrongylidae (Nematoda), With An Initial Assessment Of Coevolution And Biogeography, Eric P. Hoberg, J. Ralph Lichtenfels
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Phylogenetic analysis of the subfamilies of the Trichostrongylidae based on 22 morphological transformation series produced a single cladogram with a consistency index (CI) = 74.2%. Monophyly for the family was supported by the structure of the female tail and copulatory bursa. Two major clades are recognized: the Cooperiinae clade with the basal Cooperiinae and Libyostrongylinae + Trichostrongylinae, and the Graphidiinae clade with the basal Graphidiinae and Ostertagiinae + Haemonchinae. Dendrograms presented by Durette- Desset (1985) (CI = 56.1%) and Lichtenfels (1987), based on the key to the Trichostrongylidae by Gibbons and Khalil (1982) (CI = 59.0%), were found to be …
A Comparison Of Plotless Density Estimators Using Monte Carlo Simulation, Richard M. Engeman, Robert T. Sugihara, Larry F. Pank, William E. Dusenberry
A Comparison Of Plotless Density Estimators Using Monte Carlo Simulation, Richard M. Engeman, Robert T. Sugihara, Larry F. Pank, William E. Dusenberry
United States Department of Agriculture Wildlife Services: Staff Publications
We conducted an extensive simulation study to compare the performance of a large group of plotless density estimators (PDEs) to obtain clarification of their relative performance in a diversity of sampling situations. The PDEs studied included well-known ones from the literature plus some extensions and modifications introduced here. The simulations cover 96 combinations of 6 spatial patterns, 4 sample sizes, and 4 population densities. We made comparisons within classes of similar estimators, and we indicate the best-performing PDEs out of the complete set studied. Over all spatial patterns, the angle-order estimator with measurements to the third closest individual in each …
Galliform Conservation Assessment: First Review Draft, Philip J. Mcgowan, John P. Carroll, Susie Ellis
Galliform Conservation Assessment: First Review Draft, Philip J. Mcgowan, John P. Carroll, Susie Ellis
Galliformes Specialist Group and Affiliated Societies: Reports and Other Materials
Executive Summary
Two hundred and forty-seven galliform taxa (subspecies, groups, or species) were considered by the Galliform Conservation Assessment workshop. Two extinct taxa were not considered. Of the 247 taxa, 91 (37%) were assigned to one of three categories of threat, based on the Mace-Lande criteria:
Critical, 5 taxa
Endangered, 26 taxa
Vulnerable, 60 taxa
Secure, 145 taxa
Unknown, 11 taxa
Three of the 247 taxa (1%) were recommended for Population and Habitat Viability Assessment (PHVA) workshops.
Recommendations for future action were made for 168 taxa in the following categories:
Stopping the bird trade, 7 taxa
Intensive management of the …
Cropwatch No. 94-24, Nov.11, 1994, Lisa Brown Jasa
Cropwatch No. 94-24, Nov.11, 1994, Lisa Brown Jasa
Crop Watch (1994–2005)
Inside
Conservation
compliance ........................ 164
Grass control in
winter wheat ..................... 165
Testing drinking water ........ 166
Herbicide chemistry ............ 166
Goatgrass Conference .......... 167
Winter meetings ................... 168
Expression Of A Functional Human Complement Inhibitor In A Transgenic Pig As A Model For The Prevention Of Xenogeneic Hyperacute Organ Rejection., William L. Fodor, Barry L. Williams, Louis A. Martis, Josaeph A. Madri, Scott A. Rollins, James W. Knight, William H. Velander, Stephen P. Squinto
Expression Of A Functional Human Complement Inhibitor In A Transgenic Pig As A Model For The Prevention Of Xenogeneic Hyperacute Organ Rejection., William L. Fodor, Barry L. Williams, Louis A. Martis, Josaeph A. Madri, Scott A. Rollins, James W. Knight, William H. Velander, Stephen P. Squinto
Papers in Biotechnology
ABSTRACT The serious shortage of human organs available for transplantation has engendered a heightened interest in the use of animal organs (xenografts) for transplantation. However, the major barrier to successful discordant xenogeneic organ transplantation is the phenomenon of hyperacute rejection. Hyperacute rejection results from the deposition of high-titer preformed antibodies that activate serum complement on the luminal surface of the vascular endothelium, leading to vessel occlusion and graft failure within minutes to hours. Although endogenous membrane-associated complement inhibitors normally protect endothelial cells from autologous complement, they are species restricted and thus confer limited resistance to activated xenogeneic complement. To address …