Movie 2

Embryonic development imaged in the Germ Layer strain. Side-by-side ventral (left) and dorsal (right) views of development in control embryos from the Germ Layer strain, which marks nuclei in the ectoderm (epidermis and ∼1/3 of neurons; red), mesoderm (yellow) and endoderm/pharynx (green). Images were acquired every 20 minutes. Playback is 7200X real time.