Holick, M F Photometabolism of 7-dehydrocholesterol to previtamin D3 in skin. [electronic resource] - Biochemical and biophysical research communications May 1977 - 107-14 p. digital Publication Type: Journal Article; Research Support, U.S. Gov't, P.H.S. ISSN: 0006-291X Standard No.: 10.1016/0006-291x(77)91674-6 doi Subjects--Topical Terms: AnimalsCholecalciferol--analysisCholesterol--analogs & derivativesRatsSkin--metabolismUltraviolet RaysVitamin D Deficiency--metabolism