Long term immunity to diseases?!


Question: Long term immunity to diseases!?
Long term immunity to diseases such as measles occur because_______!.

a) memory mast cells produce antibodies is response to pathogens entering the body
b) plasma cells remain in the immune system to protect the body
c) memory B cells are produced in response to specific pathogens
d) all of the choices are correctWww@Answer-Health@Com


Answers:
Lil Butterfly,
You would have to choose



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