Gold and aerosol can: what they have in common

1. Step 1. Gold — is material for — Rapid test. The label is gold nanoparticles.
2. Step 2. Rapid test — is made of — Cellulose. The strip is nitrocellulose.
3. Step 3. Cellulose — is material for — Nail polish. The film is formed by nitrocellulose: cellulose treated with nitric acid.
4. Step 4. Nail polish — is a kind of — Cosmetics. Decorative cosmetics for nails.
5. Step 5. Cosmetics — includes — Deodorant. Cosmetics.
6. Step 6. Deodorant — uses — Aerosol can. An aerosol.

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