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Clip 2281 Bacteria living on skin

Clip 2278

Micro-organisms in a sewage farm

Clip 1838

White Blood Cells

Clip 2456 shows Edward Jenner and his vaccine to cure smallpox.

Clip 2284 shows Fleming and his discovery of Penicillin

Clip 2283

Washing Hands

Clip 862

Decaying Fruit

Clip 9656

Baking Bread