What are the chemical weapons involved in the first line of defense?
A) Oil and sweat glands within the skin
B) Mucus in the respiratory tract
C) Saliva and digestive enzymes
D) All of these are correct.
Correct Answer:
Verified
Q1: The type of cells that are particularly
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Q3: The main target of the HIV virus
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Q5: Cells called _ release chemicals that kill
Q9: Interleukin-1 stimulates _,which activate the remainder of
Q10: The surface layer of the skin is
Q11: An antigen that promotes an immune response
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Q15: A molecule that induces an immune response
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