Fluorescent micrograph showing transgenic zebrafish embryos expressing green fluorescent protein in the muscle precursor cells (myotomes). The green fluorescence comes from an alpha-actin-GFP transgen...

Zebrafish midbrain hindbrain morphogenesis as seen with bodipy-ceramide and fluorescent dextran labeling. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.

Scanning EM of the somites (myotomes), of a 24 hr (prim-5) zebrafish embryo. Specimens were chemically fixed critically point dried, and sputter coated with gold/palladium. This image is part of a s...

Light micrograph of a human embryo at the blastocyst stage, about six days after fertilization. The embryo is in the process of "hatching" out of the zona pellucida - the tough outer membrane - just b...

Zebrafish midbrain hindbrain morphogenesis as seen with bodipy-ceramide and fluorescent dextran labeling. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.

Neural plate of Xenopus laevis at early neural tube closure.

Timelapse of dorsal yolk syncytial layer (YSL) nuclear movements during zebrafish gastrulation. A marginal band of YSL nuclei undergo epiboly toward the vegetal pole while internal-YSL (I-YSL) nuclei ...

Scanning EM of a 24 hr (prim-5) Zebrafish embryo, fractured to reveal the neural tube, notochord and anterior faces of the myotomes. Specimens were chemically fixed critically point dried, and spu...

Timelapse of yolk syncytial layer (YSL) nuclear movements during gastrulation from a dorsal-anterior view shows epiboly, early animal pole directed movements of I-YSL nuclei, and convergence and exten...

Zebrafish midbrain hindbrain morphogenesis as seen with bodipy-ceramide and fluorescent dextran labeling. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.