. The elements of experimental embryology. Embryology, Experimental; Embryology. 490 APPENDIX is invaginated, the actual neural plate may be much narrower than the presumptive neural region (see p. 155). Further, it does not differentiate into a complete but undersized nervous system, but into tail neural tube only: the organiser, in other words, has regional properties. If only a slight degree of invagination occurs, the in- vaginated material is presumptive caudal tissue, and the induced structure is a tail (fig. 220 a). This then grows out as quite a normal. Please note that these images ar


. The elements of experimental embryology. Embryology, Experimental; Embryology. 490 APPENDIX is invaginated, the actual neural plate may be much narrower than the presumptive neural region (see p. 155). Further, it does not differentiate into a complete but undersized nervous system, but into tail neural tube only: the organiser, in other words, has regional properties. If only a slight degree of invagination occurs, the in- vaginated material is presumptive caudal tissue, and the induced structure is a tail (fig. 220 a). This then grows out as quite a normal. 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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