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H-Y Antigen
GA-1 Germ Cell Antigen; Antigen, H-Y; Antigen, HY; GA 1 Germ Cell Antigen; H Y Antigen
A sex-specific cell surface antigen produced by the sex-determining gene of the Y chromosome in mammals. It causes syngeneic grafts from males to females to be rejected and interacts with somatic elements of the embryologic undifferentiated gonad to produce testicular organogenesis.