Front Cover: The Issue of Tissue: Approaches and Challenges to the Light Control of Drug Activity (ChemPhotoChem 7/2021).

Keywords: drug activity; photoactivation; photocleavage; photopharmacology; toxicity EN drug activity photoactivation photocleavage photopharmacology toxicity 592 592 1 07/19/21 20210701 NES 210701 B The Front Cover b is a depiction of a major challenge for the light control of drug activity: Light (yellow) on the outside of the body must traverse skin and the interior of the body to reach the target (red), while being diminished and releasing heat with each centimetre it travels. Drug activity, photoactivation, photocleavage, photopharmacology, toxicity. [Extracted from the article]