To protect the body against foreign particals, or just protecting your body from getting sick, or helping it get better when it is sick, think of it as police
It protects the body from viruses and bacteria.
lymphokines
yes
yes
Your immune system which is your white blood cells
Depression lowers everyone's immunity. Everything is depressed, not just the mood.
Respiratory and Immune Systems
Respiratory and Immune Systems
The immune system
Most people's immune systems do kill off cancer cells. People with weak immune systems have a higher chance at getting cancer.
All small dogs have lower immune systems, their sugar levels drop quicker then big dogs.
Some people have stronger immune systems or are immune to it.