ABH-Related Antigens Participate in the Spermatogenesis of Cats and Rats

The ABH antigens were expressed in the secretory cells of many mammals(1), including humans. Although the allelic cDNA of ABO blood group had been cloned and sequenced(2), no clear explanation of the biological significance of the ABH and related antigens has been proposed. In this study we examined the distribution of ABH related antigens in the urogenital organs from cats and rats in order to pro mote better understanding on the biological significance of the antigens, using monoclonal antibodies (MoAbs) against the ABH and related antigens, and lectins. The results obtained from the present study suggested that the ABH and related antigens may play certain roles in the processes of development of spermatogenic system. In view of forensic practice, the importance of species identification prior to ABO blood grouping from seminal, saliva and urinal stains are stressed on the basis of the present results.