To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 1 Twitching of human muscle fibers differentiated in vitro from PAX7Venus+ cells FACS-sorted from 3-week-old cultures and replated for 2 weeks. Differentiation of the human PAX7-positive myogenic precursors/satellite cell lineage in vitro Ziad Al Tanoury, Jyoti Rao, Olivier Tassy, Bénédicte Gobert, Svetlana Gapon, Jean-Marie Garnier, Erica Wagner, Aurore Hick, Arielle Hall, Emanuela Gussoni, and Olivier Pourquié Development 2020. 147:None-None; doi: 10.1242/dev.187344 Download Original Video