. The beginnings of embryonic development : A symposium organized by the Section on Zoological Sciences of the American Association for the Advancement of Science, cosponsored by the American Society of Zoologists and the Association of Southeastern Biologists, and presented at the Atlanta meeting, December 27, 1955. Embryology. S. RANZI 293 nuclei: 1107 ± 24 m the control embryos; 1233 ± 28 in NaSCN embryos; difference in the means is 126; standard error of differ- ence is ±37, , a significant difference. Furthermore SCN~ in- duces chordal differentiation from cells of other organ rudimen
. The beginnings of embryonic development : A symposium organized by the Section on Zoological Sciences of the American Association for the Advancement of Science, cosponsored by the American Society of Zoologists and the Association of Southeastern Biologists, and presented at the Atlanta meeting, December 27, 1955. Embryology. S. RANZI 293 nuclei: 1107 ± 24 m the control embryos; 1233 ± 28 in NaSCN embryos; difference in the means is 126; standard error of differ- ence is ±37, , a significant difference. Furthermore SCN~ in- duces chordal differentiation from cells of other organ rudiments (Corti, 1950; Badinez et at, 1954). These authors obtained larvae which, beside the normal notochord, had more or less extended. Fig. 3. Cross sections of Triton embryos: A, control embryo; B, C, Li- treated embryos; c, notochord; mi, somites. (From Lehmann, 1937.) sections of notochord, lateral or dorsal to the brain. Generally, animalizing substances induce notochord formation from cells of other presumptive rudiments; this is also shown by Lallier (1955). He showed that sodium thiomalate, an animalizing agent in the sea urchin, induces the formation of notochord in the ventral explants of young amphibian gastrulae in which, therefore, the. 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 American Association for the Advancement of Science. Section on Zoological Sciences; Tyler, Albert, 1906-. Washington
Size: 1180px × 2119px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookpublisherwashington, booksubjectembryology
