Which of the following is considered to be an adaptive defense mechanism against infection?
A) stomach acids
B) skin
C) mucus in respiratory tract
D) normal bacteria in intestine
E) antibodies in mother's milk
Correct Answer:
Verified
Q21: The clonal selection theory states that
A) all
Q22: T cells
A) are responsible for cell-mediated immunity.
B)
Q23: If we inject three different antigens into
Q24: Which portion of the antibody binds to
Q25: Adaptive immunity depends upon the activity of
Q27: An antibody molecule
A) will either consist of
Q28: Most antibodies found in the blood belong
Q29: In order to decrease the effects of
Q30: When comparing T cells and B cells,
Q31: Complement is required for the formation of
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