. The elements of experimental embryology. Embryology, Experimental; Embryology. CLEAVAGE AXD DIFFERENTIATION 87. Fig. 37 The equality of nuclear division during cleavage. A fertilised egg of Triton taeniatus was constricted by a ligature, restricting the nucleus to the right-hand half, in which cleavage has reached the 8-cell stage, while the left-hand half is still undivided. A, At the i6-cell stage one of the cleavage-planes coincides with that of the ligature, and 1/16 nucleus has passed across into the as yet undivided left half. B, The ligature was then drawn tight so as to effect comple
. The elements of experimental embryology. Embryology, Experimental; Embryology. CLEAVAGE AXD DIFFERENTIATION 87. Fig. 37 The equality of nuclear division during cleavage. A fertilised egg of Triton taeniatus was constricted by a ligature, restricting the nucleus to the right-hand half, in which cleavage has reached the 8-cell stage, while the left-hand half is still undivided. A, At the i6-cell stage one of the cleavage-planes coincides with that of the ligature, and 1/16 nucleus has passed across into the as yet undivided left half. B, The ligature was then drawn tight so as to effect complete separation between the two (lateral) halves. C, Each developed into a perfect embrvo (one slightly further advanced than the other); 140 days after the operation, they were identical. A nucleus of the i /16 stage is therefore equivalent to that of the whole egg. (From Spemann, Zeitschr. Wiss. Zool. cxxxii, 1928.). 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
