Hay fever and asthma following maximum exposure to ragweed.
D031164:Ambrosia; D001249:Asthma / Q000209:etiology*; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000209:etiology*
ASTHMA/etiology and pathogenesis; HAYFEVER/etiology and pathogenesis; RAGWEED