. The elements of experimental embryology. Embryology, Experimental; Embryology. '•^. rf"^. Fig. 85 The formation or non-formation of a given structure depends not only on the presence of an inductive or formative stimulus (organiser), but also on local specific factors, intrinsic to the fields. Triton taeniatiis normally develops a balancer, the axolotl does not. Nevertheless, a piece of gut-roof of axolotl grafted into an embryo of Triton can induce the balancer field of the latter to develop supernumerary balancers, A. Conversely, B, a piece of trunk epidermis of Triton grafted on to t
. The elements of experimental embryology. Embryology, Experimental; Embryology. '•^. rf"^. Fig. 85 The formation or non-formation of a given structure depends not only on the presence of an inductive or formative stimulus (organiser), but also on local specific factors, intrinsic to the fields. Triton taeniatiis normally develops a balancer, the axolotl does not. Nevertheless, a piece of gut-roof of axolotl grafted into an embryo of Triton can induce the balancer field of the latter to develop supernumerary balancers, A. Conversely, B, a piece of trunk epidermis of Triton grafted on to the head of an axolotl embryo, gives rise to a balancer (left side of photograph), while no balancer is formed from the normal axolotl epidermis on the other side. The axolotl therefore possesses the necessary formative stimulus for balancer formation, but its epidermis fails to react to it. g. grafted axolotl tissue; w. normal balancer; s. supernumerary balancer. (From Mangold, Natunuiss. xix, 1931.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Huxley, Julian, 1887-1975; De Beer, Gavin, Sir, 1899-1972. New York [Hafner Pub. Co. ]
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Keywords: ., bookcentury1900, bookcollectionbiodiversi, booksubjectembryology
