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colleen colleen
wrote...
Valued Member
Posts: 17076
10 years ago
The first defense within the nose, mouth, throat, and lungs against infectious microbes is
a. the immunoglobulin IgA.
b. CRH.
c. cortisol.
d. epinephrine.
e. the release of antigens.
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wrote...
10 years ago
a. the immunoglobulin IgA.
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