Previous Image 03_AVG_SUBSTACK_d2 20x 1.5×1.96x arl13b fucci cervical somites merge-1.tif_reddish-yellowish-cyanish31-Aug-2017-17:00:17 Live image of developing somites of an E11.5 mouse embryo labelled with Arl13bCerulean-Fucci2a. (Mill/Ford). Tweet