Prevalence of antibodies to a new histo-blood system: the FORS system.

Abstract

Sheep erythrocytes are suitable for searching for human anti-Forssman antibody. The quantity of anti-Forssman antibodies in plasma is higher in females than in males. In the population (n=800) studied here, we found one individual lacking the anti-Forssman antibody. These results contribute to the data already published, confirming that FORS is a rare blood group.