Camera lucida sketches of the zebrafish embryo at selected stages. This image is from the Pharyngula period at the 31 hour Prim-16 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 hatching period at the 60 hour pec-fin 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 hatching period at the 72 hour protruding mouth stage. The animal pole is to the top for the early stages, an...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is in the Cleavage period at the 1.25 hour 8 cell 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 Blastula period at the 4 hour sphere 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 Blastula period at the 4.3 hour dome 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 Gastrula period at the 5.3 hour 50% epiboly stage. The animal pole is to the top for the early stages, and anter...

Camera lucida sketches of the zebrafish embryo at selected stages. This image is from the hatching period at the 48 hour long-pec stage.The animal pole is to the top for the early stages, and anterior...

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 Cleavage period at the 1 hour 4 cell stage. The animal pole is to the top for the early stages, and anterior is ...