Blood groups of pygmy chimpanzees (Pan paniscus): human-type and simian-type

Blood grouping of nine pygmy chimpanzees revealed them to be human-type group A1, M,Rho, and simian-type V.D, CCef, g, H, I, K, L. Only group Nc was polymorphic. Pan paniscus red cells can be easily distinguished from those of Pan troglodytes by the serological characteristics of human-type blood groups A and M. Also, the distribution of the simian-type blood group systems V-A-B and C-E-F are strikingly different in the two species.