. The elements of experimental embryology. Embryology, Experimental; Embryology. â # ,â⺠i' M. B D Fig. 68 The regional inductive properties of the organiser and the regional reactive properties of different levels of host-tissue in Urodele embryos. Photographs of the embryos on which the diagram fig. 67 is based. A, Head-organiser grafted at head level; the secondary embryo (on the right) consisting only of a head with ear-vesicles, and eyes fused with those of the primary embryo (). B, Head- organiser grafted at trunk level; the secondary embryo (on the right) is nearly c


. The elements of experimental embryology. Embryology, Experimental; Embryology. â # ,â⺠i' M. B D Fig. 68 The regional inductive properties of the organiser and the regional reactive properties of different levels of host-tissue in Urodele embryos. Photographs of the embryos on which the diagram fig. 67 is based. A, Head-organiser grafted at head level; the secondary embryo (on the right) consisting only of a head with ear-vesicles, and eyes fused with those of the primary embryo (). B, Head- organiser grafted at trunk level; the secondary embryo (on the right) is nearly complete but its anterior end is imperfect, it lacks eyes, and its ear-vesicles () are at a lower level than those of the primary embryo (). C, Trunk-organiser at head level; the secondary embryo (on the left) is complete, its cephalic struc- tures ( eyes, ear-vesicles) on a level with those of the primary embryo (,). D, Trunk-organiser at trunk level; the secondary embryo (on the right) consists only of a trunk, ending anteriorly with ear-vesicles on a level with those of the primary embryo. (From Spemann, Arch. Entzumech. cxxiii, 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