Q. In adult humans, _______ of lead or less in the blood is considered to be normal.
A. 40µg/dL
B. 20µg/dL
C. 10µg/dL
D. 50µg/dL
Answer: 10µg/dL
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A. 40µg/dL
B. 20µg/dL
C. 10µg/dL
D. 50µg/dL
Answer: 10µg/dL