McLoone, Pauline An action spectrum for the production of cis-urocanic acid in human skin in vivo. [electronic resource] - The Journal of investigative dermatology May 2005 - 1071-4 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0022-202X Standard No.: 10.1111/j.0022-202X.2005.23731.x doi Subjects--Topical Terms: AdultFemaleHumansMaleSkin--metabolismSunscreening Agents--pharmacologyUltraviolet RaysUrocanic Acid--metabolism