Multiple Choice
Which of the following best describes the place adaptive immunity occupies in the animal kingdom?
A) All animals except sponges have adaptive immunity.
B) Only vertebrates, echinoderms, and mollusks have adaptive immunity.
C) Only vertebrates have adaptive immunity.
D) Only mammals have adaptive immunity.
E) Only humans have adaptive immunity.
Correct Answer:

Verified
Correct Answer:
Verified
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