Which of the following are examples of passive immunity?

Question

Quizplus · Accepted Answer

Passive immunity is the transfer of antibodies from one individual to another. Option A mentions antibodies produced from a vaccine, which is an example of active immunity where the individual's own immune system produces antibodies. Option D mentions only a person receiving an injection of antibodies, which is an example of passive immunity. Option E mentions antibodies produced from a vaccine, which is again an example of active immunity. Option C mentions only a fetus acquiring antibodies through the placenta, which is an example of passive immunity. However, option B mentions both a fetus acquiring antibodies through the placenta and a person receiving an injection of antibodies, making it the best choice as it includes two examples of passive immunity.

Which of the Following Are Examples of Passive Immunity