Quick Biochemistry - Vitamins (Section 1 - No. 8)
What is the standard used to define one international unit of Vitamin A?
The activity of 0.3 µg of Vitamin A alcohol
The activity of 0.344 µg of Vitamin A alcohol
The activity of 0.6 µg of Vitamin A alcohol
The activity of 1.0 µg of Vitamin A alcohol
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