Fig. 1.
Biosynthesis and metabolism of vitamin D (UVB = Ultraviolet ray B, DBP = VD Binding Protein, FGF = Fibroblast Growth Factor, PTH = Parathormone, VDR = VD Receptor).
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.