[Certain observations on the progress of allergy study in the United States].
D006801:Humans; D006967:Hypersensitivity; D007154:Immune System Diseases; D009525:Niacin; D009539:Nicotinic Acids; D014481:United States
D009539:Nicotinic Acids; D009525:Niacin
ALLERGY; NICOTINIC ACID
Alcune osservazioni sui progressi degli studi di allergia negli Stati Uniti d'America.