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14. Allergies are caused by which of the following? A. Autoimmune diseases B. Ingesting IgA in breast milk C. Reactions to antigens D. Strong toxins in the environment
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14. Allergies are caused by which of the following?

A. Autoimmune diseases
B. Ingesting IgA in breast milk
C. Reactions to antigens
D. Strong toxins in the environment

User John Michelau
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8.3k points

1 Answer

2 votes
C. reactions to antigens. These come in the form of pollen, grass, dust etc.
Hope this helps :)
User MoiTux
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