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Results for “Histocompatibility Testing”

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PubMed1996

Histocompatibility testing of dog families with highly polymorphic microsatellite markers.

The dog has served traditionally as a model for marrow and organ transplantation. A key component of any study of transplantation is histocompatibility typing of donors and recipients. Towards the development of a less expensive, more simplified typing system within canine families, a new highly polymorphic microsatellite marker for the canine Major Histocompatibility Complex class II region was isolated and characterized. In addition, we report on the application of class I and class II microsatellite-based markers for following the inheritance of the alleles within the canine analog of the human HLA loci, DLA, through multi-generation pedigree.

Alleles↗
PubMed1973

The genetic divergence of sublines as assessed by histocompatibility testing.

The degree of genetic divergence which has occurred between a number of inbred strains of mice and between two sublines of inbred rats was assessed by determining the fate of inter-subline skin grafts. Sublines which had been separated for 29 and 42 generations possessed no detectable incompatibility, while three combinations of sublines judged to have been maintained apart for from 123 to 129 generations showed slight degrees of histoincompatibility. One pair of sublines which had been separated for 119 generations demonstrated a marked degree of incompatibility, and an F(2) test suggested that mutations had occurred at four or five histocompatibility loci.

Animals↗
PubMed1977

[Mixed lymphocyte culture (MLC) as a histocompatibility test for allogen grafts. Part II. technique, significance and applications (author's transl)].

This study introduces mixed lymphocyte culture (MLC) as a clinical method for prognostic assessment in allogen grafts. The principle and technical data are discussed. The technical variance and biological reproducibility of the MLC was tested by means of the recommendations of the Sixth International Histocompatibility Workshop 1975. The individual data show fluctuation, but the relative values and the order of rank are important. The order of rank is reproducible.

Analysis of Variance↗
PubMed1994

Progress report on the ASHI/CAP Proficiency Survey Program in Histocompatibility Testing. I. HLA-A,B,C typing, antibody screening, and lymphocytotoxicity crossmatching. American Society for Histocompatibility and Immunogenetics. College of American Pathologists.

The Histocompatibility Survey Program was organized in 1982 as a joint project by the ASHI and CAP to evaluate laboratory performance in HLA typing, lymphocytotoxicity crossmatching, and antibody analysis. This report summarizes the experience with the HS surveys on HLA class I serology. During a 12-year period, the number of participating laboratories increased from 150 to 285 and HLA typing was done with 90 survey specimens representing 20 HLA-A and 35 HLA-B antigens. Most unsplit antigens were correctly identified in more than 90% of the laboratories. For many antigens, a high percentage of participants reported a split and there was generally a high consensus of a correct assignment. Nevertheless, several antigens were difficult to define, as shown by low consensus rates. During recent years, the assignments of Bw4/6 and HLA-C antigens have significantly improved. Lymphocytotoxicity crossmatching was analyzed for 138 cell-serum combinations tested by an average of 143 laboratories. Comparisons between four techniques (basic NIH, Amos modified, LI, and AHG) showed consistent results (greater than 90% crossmatch compatibility or incompatibility) for 71% of the cell-serum combinations. The crossmatch results with the remaining combinations were more variable for one or more of the crossmatch techniques. Serum antibody identification showed a continued improvement during recent years, and the average consensus for assigning acceptable antibody specificity reached 88%. A performance grading system based on a 90% consensus rate among participants is used to satisfy requirements for laboratory accreditation.

Cytotoxicity Tests, Immunologic↗