title: ABO saliva and plasma agglutinins in twins.
mesh_terms: D000017:ABO Blood-Group System / Q000032:analysis*; D000328:Adult; D000373:Agglutinins / Q000032:analysis*; D000704:Analysis of Variance; D005260:Female; D005787:Gene Frequency; D014644:Genetic Variation; D006801:Humans; D008297:Male; D011247:Pregnancy; D012463:Saliva / Q000032:analysis*; D014427:Twins
chemical_list: D000017:ABO Blood-Group System; D000373:Agglutinins