title: The immunogenicity of pyridine-extracted, alum-precipitated ragweed.
mesh_terms: D000535:Aluminum / Q000494:pharmacology*; D000818:Animals; D000906:Antibodies / Q000032:analysis; D006385:Hemagglutination Inhibition Tests; D006386:Hemagglutination Tests; D005779:Immunodiffusion; D007456:Iodine Isotopes; D011058:Pollen / Q000276:immunology*; D011725:Pyridines / Q000378:metabolism / Q000494:pharmacology*; D011817:Rabbits; D012882:Skin Tests; D014316:Tritium
chemical_list: D000906:Antibodies; D007456:Iodine Isotopes; D011725:Pyridines; D014316:Tritium; D000535:Aluminum