title: [Phenotype A2B: expected and observed frequencies].
mesh_terms: D000017:ABO Blood-Group System; D005602:France; D006801:Humans; D007125:Immunogenetics; D010641:Phenotype
chemical_list: D000017:ABO Blood-Group System
vernacular_title: Phénotype A2B: fréquence attendue et tréquence observée