Plastic film and autoclave: what they have in common

1. Step 1. Plastic film — is part of — Plastic bag. A thin polyethylene film.
2. Step 2. Plastic bag — is made of — Polyethylene. Polyethylene.
3. Step 3. Polyethylene — is material for — Surgical mask. Non-woven polypropylene.
4. Step 4. Surgical mask — uses — Germ theory of disease. Protection against droplets.
5. Step 5. Germ theory of disease — is used in — Sterilization. The rationale.
6. Step 6. Sterilization — uses — Autoclave. Sterilization by steam.

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