Members of the fibroblast growth factor (FGF) ligand family play a critical role in mesoderm formation in the frog Xenopus laevis. While many components of the signaling cascade triggered by FGF receptor activation have been identified, links between these intracellular factors and the receptor itself have been difficult to establish. We report here the characterization of Xenopus SNT-1 (FRS2al...

Introduction Experimental embryology and mesoderm induction The three-signal model of mesoderm formation Mesoderm-inducing factors Mesoderm-inducing factors as growth factors Xenopus embryos contain TGF-fi-like molecules Xenopus embryos contain FGF Elimination of inducing factors from Xenopus embryos Mesoderm-inducing factors and pattern formation Thresholds Mesoderm induction, gastrulation and...

The relationship between the formation factor and the diffusion coefficient of porous materials saturated with concentrated electrolytes: Theoretical and experimental considerations Abstract: It has been proposed previously that the formation factor, in conjunction with the self-diffusion coefficient, can be used to determine the apparent diffusion coefficient. Strictly speaking, this applicati...