Development of cell surface activity and cell surface adhesiveness in early embryos of the newt, Cynops pyrrhogaster.
The development of cell surface activity and adhesiveness was examined in relation to cleavage number in early embryos of the newt, Cynops pyrrhogaster. Both large hyaline bleb formation and surface adhesiveness to substratum were manifested in presumptive ectodermal cells isolated from embryos after the eleventh cleavage (mid-blastula stage). Scanning electron microscopy of the inner surface of the blastocoelic wall (presumptive ectodermal cell layer) revealed the formation of large blebs after the eleventh cleavage. Treatment with alcian blue and lanthanum nitrate demonstrated the accumulation of an extracellular matrix (ECM) on the surface of large blebs.
Komazaki
S
S
Department of Anatomy, Saitama Medical School, Japan.
D000818:Animals; D001757:Blastomeres / Q000166:cytology* / Q000648:ultrastructure; D002448:Cell Adhesion; D002454:Cell Differentiation; D002465:Cell Movement; D012455:Salamandridae / Q000196:embryology*