Fig. 1From: Bioconversion of vitamin D3 into calcitriol by Actinomyces hyovaginalis isolate CCASU- A11-2HPLC analysis profile of vitamin D 3 bioconversion concentrated extract produced by Actinomyces hyovaginalis isolate A11-2 in a laboratory fermenter, showing a peak at retention time of about 3.2 min (corresponding to calcitriol) and marked by an arrowBack to article page