Author Question: When the body is invaded by antigens, the immune system forms substances called A) antibodies. ... (Read 135 times)

K@ · **on:** Jul 12, 2018

When the body is invaded by antigens, the immune system forms substances called

A) antibodies.
B) macrophages.
C) lymphocytes.
D) helper cells.

Question 2

All of the following behaviors will compromise your immune system's ability to fight infections EXCEPT

A) not getting enough sleep.
B) eating junk food.
C) excessive alcohol consumption.
D) exercising regularly.