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Using immunohistological techniques, class 1 products of the major histocompatibility complex (MHC) have been demonstrated on various forms of human extra-villous trophoblast in placental tissues taken from first, second and third trimester pregnancies. This contrasts with the absence of class 1 MHC antigens on all forms of villous trophoblast. The extra-villous trophoblast which reacted with antibodies to monomorphic class 1 MHC antigens consistently failed to bind HLA-A or HLA-B antibodies specific for the foetal phenotype. This suggests, but does not prove, that the MHC antigen expression of trophoblast may be restricted to HLA-C or some other undefined class 1 antigen.

Type

Journal article

Journal

Immunology

Publication Date

07/1984

Volume

52

Pages

457 - 468

Keywords

Antibody Specificity, Chorion, Epitopes, Female, HLA Antigens, HLA-A Antigens, HLA-B Antigens, HLA-C Antigens, Humans, Immunoenzyme Techniques, Major Histocompatibility Complex, Placenta, Pregnancy, Trophoblasts, beta 2-Microglobulin