Release of histamine in the blood of ragweed-sensitive individuals.
D031164:Ambrosia; D001769:Blood; D006632:Histamine / Q000097:blood*; D006801:Humans; D006255:Rhinitis, Allergic, Seasonal / Q000097:blood*
D006632:Histamine
BLOOD; HAY FEVER/blood in; HISTAMINE/in blood