THE Bg^a BLOOD GROUP ANTIGEN AND HLA-B7

Abstract

In testing 588 donors' cell samples, we found 57 Bg (a+) samples (9.69%). By the use of the Bg (a+) cells thus obtained, 9 anti-Bg^a sera were detected among 102, 500 blood donations tested.
By the cytotoxicity tests with the Bg (a+) donors' lymphocytes, we demonstrated strongly positive associations between the antigen Bg^a and HLA-B7, and between anti-Bg^a and anti-HLA-B7.
A Japanese family was shown where the Bg^a was inherited together with HLA-B7 straitforwords.