Practice question

MCQ

Question

Which of the following statements about allergic reactions is incorrect?

Options

Choose one · Correct answer highlighted

Allergic reactions involve the release of histamine. Mast cells play a major role in allergic reactions. IgE antibodies are involved in allergic responses. Allergic reactions are caused by bacterial infections. Correct

Explanation

Allergic reactions are not caused by bacterial infections but occur due to an overreaction of the immune system to harmless substances.

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