A highly sensitive peroxidase-antiperoxidase method for detection of H-Y antigen on cultivated human fibroblasts

Summary A peroxidase-anti-peroxidase method for the detection of H-Y antigen at the single cell level is described. The efficiency of the test was examined in cultivated fibroblasts derived from control subjects and from XX males and a true hermaphrodite. For comparison, H-Y antigen was determined in blood cells of the same probands using the cytotoxic test. The finding of H-Y positive fibroblasts in the intersex patients has implications for the origin of these disorders.