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| H-Y Antigen HY 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. |