A friend asks you to check on their 85-year-old grandmother…
A friend asks you to check on their 85-year-old grandmother who resides in a nursing home. Your friend tells you that she rarely gets outside, eats hardly any dairy products, and has aching bones. It is likely that their grandmother has a specific vitamin deficiency. Synthesis of the vitamin in question is dependent on ultraviolet radiation. The actual step in the activation of this vitamin occurs in what tissues?
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