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A healthy adult man has about how many RBCs per cubic millimetre of blood?

A5 to 5.5 thousand
B50 to 55 thousand
C5 to 5.5 million
D5 to 5.5 billion
Answer & Solution
Correct answer: C. 5 to 5.5 million
The usual adult male count is 5 to 5.5 million RBCs per cubic millimetre.
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