To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Movie 2 Hes7 expression in an iPSM colony cultured in a fibronectin-coated plate. Bright field images (BF) and luciferase activity of Hes7 reporter (Luc) were conitored. Segmental boarder formation is indicated by arrowheads. ES cell-derived presomitic mesoderm-like tissues for analysis of synchronized oscillations in the segmentation clock Marina Matsumiya, Takehito Tomita, Kumiko Yoshioka-Kobayashi, Akihiro Isomura, and Ryoichiro Kageyama Development 2018. 145:None-None; doi: 10.1242/dev.156836 Download Original Video