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Healthy people over 17 can donate what part of their blood every two weeks?

Question 1:

Healthy people over 17 can donate what part of their blood every two weeks?

A. Platelets

B. White blood cells

C. Blood serum

D. Red blood cells

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Trivial Practice Quiz science-technology - Test 46 | Englishfreetest.com

30 minutes
15 questions