title: H, A and A1 reactivity in two Polynesian groups.
abstract: Polynesian O bloods from Samoans and Tokelau Islanders have the same mean H reactivity as Caucasian, and their A1 bloods the same A1 content. However, Polynesian A1 bloods have significantly greater H reactivity than Caucasian, and the Tokelau Islanders also showed enhanced A and IT. It is suggested that the Polynesian AHI molecular conformation must differ from the Caucasian pattern, providing an arrangement of antigen sites more favourable to some antigen-antibody reactions.
mesh_terms: D000017:ABO Blood-Group System; D000328:Adult; D006801:Humans; D007125:Immunogenetics; D009520:New Zealand; D011114:Polynesia / Q000208:ethnology; D044465:White People
chemical_list: D000017:ABO Blood-Group System