Immune SystemFinds and destroys germs.5th GradeFinds and destroys germs, and remembersthem so the next attack is faster.MAIN PARTSwhite blood cells, lymph nodesSkin is the first barrier — unbroken skin keeps most germs out.White blood cells hunt down bacteria and viruses.A fever is deliberate: heat makes it harder for germs to survive.Memory cells remember a germ for years.Vaccines train the memory cells without you getting ill.LOOK FOR ITwhite blood cells · lymph nodes · spleen · skinTravels through the circulatory and lymphatic systems to reacheverywhere.Immune Systemwww.littleactivity.com

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Science · 5th Grade

Immune System

Finds and destroys germs.

How to use it

Point to where this system is on your own body as you read each fact.

Free · print-ready PDF · US Letter and A4

Grade
5th Grade
Ages
10–11
Subject
Science
Pages
1

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