Which of the following statements regarding natural immunity is not true?
A) Natural immunity includes receiving antibodies from the mother through the placenta.
B) It does not require prior exposure to the pathogen.
C) A good example of natural immunity is the macrophage.
D) Natural immunity mechanisms are not specific to any particular pathogen.
A
Explanation: Natural immunity is innate immunity and is not specific to a particular disease and does not require prior exposure to a pathogenic agent. Receiving antibodies from the mother through the placenta would be passive acquired immunity. All other statements regarding natural immunity are true.
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