Multiple Choice
Which of the following lists the body's first, second, and third lines of defense in order?
A) Adaptive immunity, external innate immunity, internal immunity
B) External innate immunity, internal innate immunity, adaptive immunity
C) External innate immunity, adaptive immunity, internal innate immunity
D) External adaptive immunity, internal adaptive immunity, innate immunity
E) Innate immunity, internal adaptive immunity, internal innate immunity
Correct Answer:

Verified
Correct Answer:
Verified
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