6
Allergy
Teacher's Guide
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ward
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science
What is the difference between an allergen and an antigen?
What are the three principle types of immune responses to allergens?
Name five clinical manifestations of allergies.
Critical Thinking: In medicine, the hygiene hypothesis posits that hygienic conditions—such as requiring
children to frequently use hand sanitizers—create more allergies, because exposure to allergens can "train"
the body's immune system to better manage allergic responses. Choose a side and present an argument for
or against the hygiene hypothesis.
