Camera lucida sketches of the zebrafish embryo at selected stages. This image is in the Zygote period at the 0.2 hour 1 cell stage. The animal pole is to the top for the early stages, and anterior is...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is in the Cleavage period at the 2 hour 64 cell stage. The animal pole is to the top for the early stages, and anterior i...

Camera lucida sketches of the zebrafish embryo at selected stages. The animal pole is to the top for the early stages, and anterior is to the top later, except for the two animal polar (AP) views show...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is in the Blastula period at the 3.75 hour oblong stage. The animal pole is to the top for the early stages, and anterior ...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is in the Gastrula period at the 5.7 hour germ ring stage. The animal pole is to the top for the early stages, and anterio...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is from the Pharyngula period at the 35 hour Prim-22 stage. The animal pole is to the top for the early stages, and anteri...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is from the Pharyngula period at the 42 hour high pec stage. The animal pole is to the top for the early stages, and anter...

This is a movie that depicts somite formation in a live knypek; trilobite double mutant embryo. This is a dorsal view with anterior towards the top and time points were 15 minutes apart. Somites in kn...

Timelapse of dorsal yolk syncytial layer (YSL) nuclei and blastoderm morphogenesis from sphere stage (late blastula) to 1 somite stage. Top panel shows Nomarski movie of blastoderm morphogenesis inclu...

Zebrafish embryo at the 5-somite stage The cross-sectional view is in the ventral portion of the neural keel. In the lower portion of the image, somites detach from ventral mesoderm. Oriented division...