title: Protectins: past, present problems, and perspectives.
mesh_terms: D000017:ABO Blood-Group System; D000373:Agglutinins / Q000302:isolation & purification; D006384:Hemagglutination; D006388:Hemagglutinins / Q000302:isolation & purification; D012908:Snails / Q000276:immunology*
chemical_list: D000017:ABO Blood-Group System; D000373:Agglutinins; D006388:Hemagglutinins