Multiple Choice
Which is an example of active immunity?
A) a fetus acquiring antibodies through the placenta, or a person receiving an injection of antibodies
B) antibodies produced from a vaccine, or a person receiving an injection of antibodies
C) antibodies produced from a vaccine, antibodies produced when the flu strikes
D) a fetus acquiring antibodies through the placenta, antibodies produced when the flu strikes
E) a person receiving an injection of antibodies, antibodies produced when the flu strikes
Correct Answer:

Verified
Correct Answer:
Verified
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