Human-type A-B-O blood group antigens of Ethiopian vervet monkeys (Cercopithecus aethiops) in the wild.

: Human type A-B-O blood group antigens were tested in a local population of Ethiopian vervet monkeys (Cercopithecus aethiops). One animal was of group AB, the others were A. This represents a lower rate of polymorphism at this locus than has been observed among South African populations of the same species.