v Ọkpụkpụ metabolism
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Vitamin D
Ngwa nchọpụta vitamin D (ọlaedo colloidal) dabara maka nchọpụta nke obere vitamin D n'ime ọbara venous mmadụ, serum, plasma ma ọ bụ ọbara dị n'akụkụ, enwere ike iji ya nyochaa ndị ọrịa maka ụkọ vitamin D.
