ⓘ HLA-B81 is an HLA–B serotype. The serotype identifies the HLA-B*8101 and B*8102 gene products. B81 is more common in Subsaharan Africa. While there is a B81 ser ..

                                     

ⓘ HLA-B81

HLA-B81 is an HLA–B serotype. The serotype identifies the HLA-B*8101 and B*8102 gene products. B81 is more common in Subsaharan Africa. While there is a B81 serotype, serotyping of B81 is poor when simultaneously tested with anti-B7 or B48 antibodies.

                                     

1. Allele frequencies

HLA-B81 corresponds to a single allele B*8101. There are no characterized haplotypes of this allele that span multiple regions, though rare haplotypes certainly exist. The frequency in Kenya, Zimbabwe and Cameroon suggest that B81 probably expanded from core groups of Africans in Tanzania, Zambia or the Congo but with a limited spread due to its initial low frequency.

                                     
  • B81 may refer to : Sicilian Defence, Scheveningen Variation, Encyclopaedia of Chess Openings code HLA - B81 an HLA - B serotype BundesstraSe 81 a road in
  • critical role in the immune system. HLA - B is part of a family of genes called the human leukocyte antigen HLA complex. The HLA complex helps the immune system
  • Human leukocyte antigen HLA B 27 subtypes B 2701 - 2759 is a class I surface antigen encoded by the B locus in the major histocompatibility complex MHC
  • HLA - A is a group of human leukocyte antigens HLA that are coded for by the HLA - A locus, which is located at human chromosome 6p21.3. HLA is a major histocompatibility
  • HLA class II histocompatibility antigen, DRB1 beta chain is a protein that in humans is encoded by the HLA - DRB1 gene. DRB1 encodes the most prevalent beta
  • of the HLA System revised the nomenclature for HLAs Before this revision, HLA - A 02 was also referred to as HLA - A2, HLA - A02, and HLA - A 2. HLA - A 02 is
  • of α3 subset of HLA - A α - chains. For A3, the alpha, A chain are encoded by the HLA - A 03 allele group and the β - chain are encoded by B 2M locus. This group
  • HLA class I histocompatibility antigen, alpha chain E HLA - E also known as MHC class I antigen E is a protein that in humans is encoded by the HLA - E
  • It has been shown that high resolution HLA typing HLA - A, HLA - B HLA - C, HLA - DRB1, HLA - DQB1 and HLA - DPB1 may be relevant in transplantation to identify
  • HLA class II histocompatibility antigen, DM beta chain is a protein that in humans is encoded by the HLA - DMB gene. HLA - DMB belongs to the HLA class II
  • HLA - G histocompatibility antigen, class I, G, also known as human leukocyte antigen G HLA - G is a protein that in humans is encoded by the HLA - G gene
  • HLA - B 39 B 39 is an HLA - B serotype. The serotype identifies the more common HLA - B 39 gene products. B 39 is a split antigen of the broad antigen B 16, and