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...

Zebrafish embryo at tailbud stage The sequence begins at the level of the axial hypoblast. The hypoblast has separated into paraxial and axial mesoderm. The axial mesoderm (chorda mesoderm) is the pre...

Zebrafish Embryo, from tailbud to 16-hour stage, stained with 100 micromolar Bodipy-Ceramide. Bodipy-Ceramide permeates the enveloping layer epithelium of the embryo, accumulating in the interstitial ...

Scanning EM of a 24 hr (prim-5) Zebrafish embryo, showing the fibrous extracellular matrix connecting the mesoderm to the migrating neural crest cell. Specimens were chemically fixed critically poi...

High magnification scanning EM of the extracellular matrix in the ventrolateral mesoderm of a 24 hr (prim-5) Zebrafish embryo. Specimens were chemically fixed critically point dried, and sputter coate...

Transmission electron micrograph of a ferret alveolar type II cell has rough endoplasmic reticulum, RER, lamellar bodies, LB, cytoplasm, nucleus, mitochondria, M, basement membrane, grey line, telomer...

A more extensive freeze-fracture view of the membranelles on the left side of the buccal cavity. Fractures of eighty or more basal bodies can be counted in each of the dorsal three rows of the dorsal ...

Morphogenesis of the ventral yolk syncytial layer (YSL) from sphere stage to the end of gastrulation. The last round of nuclear division occurs before marginal band contraction and epiboly begins. As ...

Timelapse shows yolk syncytial layer (YSL) nuclear migration on the ventral side during gastrulation. Divergence of YSL nuclei away from ventral midline can be seen. As epiboly ends and blastopore clo...

In situ hybridizations showing the localization of bicoid (top), oskar (middle) and gurken (bottom) mRNAs in the stage 10 Drosophila egg chambers. These localizations define the anterior- posterior a...