title: Letter: A non-specific inhibitor or rubella haemagglutinn in day-old chick cells.
mesh_terms: D000373:Agglutinins; D000818:Animals; D002642:Chick Embryo; D006385:Hemagglutination Inhibition Tests; D006388:Hemagglutinins; D006801:Humans; D012409:Rubella / Q000276:immunology*
chemical_list: D000373:Agglutinins; D006388:Hemagglutinins