To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1. Blue light-induced export of DL-mCherry-LEXY is rapid and reversible. Related to Fig. 1. Blue bar in the upper right corner represents frames under blue light in this and all subsequent movies. Target gene responses differ when transcription factor levels are acutely decreased by nuclear export versus degradation James McGehee, and Angelike Stathopoulos Development 2024. 151:None-None; doi: 10.1242/dev.202775 Download Original Video