HYPOSENSITIZATION STUDIES WITH A PURIFIED DWARF RAGWEED FRACTION.
D031164:Ambrosia; D001686:Biological Phenomena; D003888:Desensitization, Immunologic; D004392:Dwarfism; D006801:Humans; D010829:Physiological Phenomena; D006255:Rhinitis, Allergic, Seasonal
DESENSITIZATION; HAY FEVER