Biology, 06.08.2019 01:10 melinalange48

Aperson who has a weakened immune system may not be able to fight against infection because
a) pathogens may enter the body and cause illness.
b) phagocytes many enter the body and cause illness.
c) normal cells crowd out unhealthy cells.
d) of an increase in the production of antibodies.

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Aperson who has a weakened immune system may not be able to fight against infection because
a...