Asthma from Medline Plus
Asthma Interactive Tutorial requires Flash Player
Allergy from Medline Plus
What is Asthma? (NHLBI)
American Academy of Allergy, Asthma, and Immunology
National Heart, Lung, and Blood Institute
Allergy and Asthma Network, Mothers of Asthmatics, Inc.
Asthma Information from Familydoctor.org