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5th Grade Immune System

Across
Diseases that are passed from person to person
Substances in the blood that fight germs
A healthy body can ______germs better than an unhealthy body
Being immune to something means to be
A sticky liquid that lines the nose and the throat
Down
The most common forms of life on earth
Can only grow within other living cells
Medicine which activates the immune system to fight germs inside the body
Medicine that will kill infections caused by bacteria