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vadim44 vadim44
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6 years ago
Age-induced weakening of muscles and reduction in bone strength are compounded by the skin's diminished production of ________, which is required for effective calcium uptake.
A) sebum
B) vitamin B12
C) vitamin D3
D) vitamin A
E) vitamin B1
Textbook 
Human Anatomy

Human Anatomy


Edition: 9th
Authors:
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