Treating embryos with the microtubule depolymerizing agent nocodazole completely blocks epiboly of the YSL and partially blocks epiboly of the blastoderm, while treating with the microtubule stabilizing agent taxol blocks epiboly of all cell layers.
12.
Treating embryos with the microtubule depolymerizing agent nocodazole completely blocks epiboly of the YSL and partially blocks epiboly of the blastoderm, while treating with the microtubule stabilizing agent taxol blocks epiboly of all cell layers.
13.
Treating embryos with the microtubule depolymerizing agent nocodazole completely blocks epiboly of the YSL and partially blocks epiboly of the blastoderm, while treating with the microtubule stabilizing agent taxol blocks epiboly of all cell layers.
14.
It is thought that a network of filamentous actin in the yolk might constrict in a myosin-II dependent manner to close the blastopore at the end of epiboly, via a " purse-string mechanism ".
15.
Additionally, zebrafish embryos that fail to make a fully differentiated EVL show defects in epibolic movements of the DEL, EVL, and YSL, suggesting a requirement for a normal EVL for the epiboly of all three cell layers.
16.
Although gastrulation patterns exhibit enormous variation throughout the animal kingdom, they are unified by the five basic types of cell movements that occur during gastrulation : 1 ) invagination 2 ) involution 3 ) ingression 4 ) delamination 5 ) epiboly.
17.
During the process of gastrulation, a special type of cells called vegetal pole, which will become endoderm cells, is completely engulfed by the prospective ectoderm, as these top cells undergo epiboly, where the ectoderm cells divide in a way to form one layer.
18.
Studies on Fundulus demonstrated that the YSL is capable of undergoing epiboly even when the blastoderm has been removed, but that the blastoderm cannot undergo epiboly in the absence of the YSL . In zebrafish, there is a microtubule array in the yolk that extends from the animal to the vegetal pole of the embryo, and that contracts as epiboly progresses.
19.
Studies on Fundulus demonstrated that the YSL is capable of undergoing epiboly even when the blastoderm has been removed, but that the blastoderm cannot undergo epiboly in the absence of the YSL . In zebrafish, there is a microtubule array in the yolk that extends from the animal to the vegetal pole of the embryo, and that contracts as epiboly progresses.
20.
Studies on Fundulus demonstrated that the YSL is capable of undergoing epiboly even when the blastoderm has been removed, but that the blastoderm cannot undergo epiboly in the absence of the YSL . In zebrafish, there is a microtubule array in the yolk that extends from the animal to the vegetal pole of the embryo, and that contracts as epiboly progresses.
