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Proteins, Amino Acids, & Enzymes › View

Proteins contain what elements?

A. Carbon

B. Hydrogen

C. Oxygen

D. Nitrogen

E. All above

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Nail Disorders and Diseases › View

Darkish purple spots Usually due to a small nail bed injury can usually be covered with nail polish or camouflage

A. Bruised nail bed

B. Onychia

C. Onycholysis

D. Paronychia

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