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. Author manuscript; available in PMC: 2009 Oct 2.
Published in final edited form as: Proc Nutr Soc. 2007 Nov;66(4):512–521. doi: 10.1017/S0029665107005836

Fig. 4.

Fig. 4

The renal and extrarenal synthesis of 1,25-dihydroxyvitamin D and its actions. 1aOHase, 25-hydroxyvitamin D-1α-hydroxylase; 1,25(OH)2D, 1,25-dihydroxyvitamin D; 25OHD, 25-hydroxyvitamin D; VDR, vitamin D receptor; VDRE.