CK-12 Foundation
Ck 12: Life Science: B and T Cell Response
[Free Registration/Login may be required to access all resource tools.] Some defenses, like your skin and mucous membranes, are not designed to ward off a specific pathogen. They are just general defenders against disease. Your body also...
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American Academy of Allergy, Asthma and Immunology
This resource describes an organization that is involved in studies and treatments of allergies. Research and education are also important parts of this organization.