Which of the following is not a chemical used as a chemical barrier to pathogens?
A) Hydrochloric acid
B) Sebum
C) Complement
D) Hydrolyzing enzymes
Correct Answer:
Verified
Q28: The type of immunity produced by vaccination
Q29: Which antibody has two antigen-binding sites?
A) IgM
B)
Q30: Specific immunity is controlled by two classes
Q31: According to the clonal selection theory,antigens select
Q32: When a child develops measles and acquires
Q34: The complement system can be activated by:
A)
Q35: Which of the following can activate complement?
A)
Q36: Which antibody has four antigen-binding sites?
A) IgM
B)
Q37: Which of the following is not a
Q38: Which of the following is true of
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