Allpyral and aqueous extracts in ragweed hayfever and asthma: a comparison.
D001249:Asthma / Q000188:drug therapy*; D006801:Humans; D007313:Insecta; D011058:Pollen; D012189:Retrospective Studies; D006255:Rhinitis, Allergic, Seasonal / Q000188:drug therapy*; D014020:Tissue Extracts / Q000627:therapeutic use*
D014020:Tissue Extracts