Magic School Bus - Inside Ralphie

Bacteria was making Ralphie sick. Bacteria are _______________ .

What kills germs that enter the mouth?

_______________ are part of the bloodstream.

Your body is built to keep out germs by sending extra _______________ to fight _______________ .

Bacteria can _______________ quickly.

The liquid part of blood is _______________ .

White blood cells use _______________ to mark bacteria and then destroy it.

White blood cells can get rid of _______________ .

_______________ help the body heal scrapes and cuts.

Eating a ____ diet helps our immune system stay strong.

There are more _______________ blood cells where infections are.

We _____ our hands to help prevent getting sick.

The _______________ carries blood throughout the body.