Background:

Ercalcitriol (1α,25-Dihydroxy Vitamin D2) is an active metabolite of vitamin D2.

参考文献:
[1]. Mawer EB, Berry JL, Cundall JP, Still PE, White A.A sensitive radioimmunoassay using a monoclonal antibody that is equipotent for ercalcitriol and calcitriol (1,25-dihydroxy vitamin D2 and D3).Clin Chim Acta. 1990 Oct 15;190(3):199-209.
[2]. Rambeck et al (1984) Biological activity of 1 alpha,25-dihydroxyergocalciferol in rachitic chicks and in rats. Int.J.Vitamin.Nutr.Res. 54 135.
[3]. Shamik J. Parikh, Marni Edelman, Gabriel I. Uwaifo et al. The Relationship between Obesity and Serum 1,25-Dihydroxy Vitamin D Concentrations in Healthy Adults. The Journal of Clinical Endocrinology & Metabolism March 1, 2004 vol. 89 no. 3 1196-1199
[4]. Daniel W. Coyne, Marvin Grieff, Shubhada N. Ahya et al. Differential effects of acute administration of 19-Nor-1,25-dihydroxy-vitamin D2 and 1,25-dihydroxy-vitamin D3 on serum calcium and phosphorus in hemodialysis patients. American Journal of Kidney Diseases. December 2002,Volume 40, Issue 6 , Pages 1283-1288