What happens when the immune system recognizes a foreign substance?
an area swollen with pus The immune system fails irradiation Bacteria dies Antibodies are formed major threat to health Something that causes allergies Viruses reproduce
A B C D E F G H
Antibodies are produced to fight antigens.
When the immune system recognizes a foreign substance, antibodies are produced
What happens when the immune system recognizes a foreign substance? (A) an area swollen with pus (B) The immune system fails (C) irradiation (D) Bacteria dies (E) Antibodies are formed (F) major threat to health (G) Something that causes allergies (H) Viruses reproduce