Fig. 8. The protrusive activity in N-cad-depleted embryos is unstable. (A,B) Single frames from time-lapse imaging are shown for wild-type (A) and N-cad-depleted (B) superficial cells. Time elapsed (in minutes) from the first frame is indicated in the upper right corner. mGFP-labeled embryos were imaged from a dorsal view, beginning at approximately the 3 som stage and extending through 4-5 som. Asterisks indicate individual cells identified in multiple frames; double arrowheads indicate the orientation of the mediolateral (ML) axis. Scale bar in A: 10 µm.