title: Naturally-occurring hemagglutinin in a tunicate Halocynthia pyriformis.
mesh_terms: D000373:Agglutinins; D000818:Animals; D001666:Binding Sites, Antibody; D002118:Calcium / Q000378:metabolism; D004912:Erythrocytes / Q000378:metabolism; D006388:Hemagglutinins; D006863:Hydrogen-Ion Concentration; D009005:Monosaccharides / Q000378:metabolism; D013696:Temperature; D014561:Urochordata / Q000276:immunology*
chemical_list: D000373:Agglutinins; D006388:Hemagglutinins; D009005:Monosaccharides; D002118:Calcium