ANTIGENIC VARIATIONS IN THE SEMINAL PLASMA OF DIFFERENT MEN

Summary. Immuno-electrophoretic analysis of human seminal plasma reveals minor but distinct differences in the antigenic components when the seminal plasma is obtained from different individuals. These differences exist primarily in those proteins of seminal plasma which do not occur in the blood, and are independent of ABO secretor status. The failure to detect some antigens in the seminal plasma of some individuals may be due not to their absence but to their low concentra- tions. Examination of several successive ejaculates collected within \m=1/2\ to 2 hr from each of three donors indicated that variations were inter\x=req-\ individual rather than intra-individual in nature.