Yolk syncytial layer nuclei undergo epiboly and converge dorsally during late gastrulation. Video made available by Mark Cooper through Zebrafish - The Living Laboratory.

Confocal projection of Zebrafish yolk cells expressing H2B-cherry (red) to mark the nucleus and a GFP membrane marker (green) to show the outline of the cells.

Nomarski/confocal projection shows animal pole of view of head anlage and underlying movements of yolk syncytial layer (YSL) nuclei (bright spots). Nuclei extend and flow through animal pole region to...

Short timelapse movie of prechordal plate, hypoblast, and yolk syncytial layer (YSL) nuclear movements during 80-90% epiboly. The prechordal plate and notochord can be seen as a tighter clump of cells...

Sixteen cell stage Zebrafish embryo. The first frame shows cells at metaphase. The sequence covers the next four cell cycles. In each prophase, there is a rapid onset of yolk platelet motility. Yolk m...

Visualization of yolk syncytial layer (YSL) nuclei in living zebrafish embryos. Sytox Green, a membrane-impermiant vital nuclear stain, was injected into the yold cell of late blastula (sphere stage)...

Timelapse of dorsal side during gastrulation shows migration of hypoblast and underlying yolk syncytial layer (YSL) nuclei (larger bright spots). The prechordal plate can be seen as a more clumped mas...

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...

Visualization of yolk syncytial layer (YSL) nuclei in living zebrafish embryos. Sytox Green, a membrane-impermiant vital nuclear stain, was injected into the yold cell of late blastula (sphere stage)...

Patterned nuclei movements in the dorsal yolk syncytial layer( YSL) after mid-gastrulation. Anterior is up. Timelapse includes Nomarski images (left panel), fluorescence (right panel) and overlay (mid...