Animal cells and systems

  • 제1권3호
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  • Pages.491-496
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  • 1997
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  • 1976-8354(pISSN)
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  • 2151-2485(eISSN)
한국통합생물학회 (The Korean Society for Integrative Biology)
권호 표지

Cell Population Changes in Transplanted Olfactory Placodes of Chimerae of Xenopus Iaevis and Xenopus borealis

  • 발행 : 1997.09.01
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초록

When olfactory placodes are transplanted at stages 23/24 from Xenopus laevis to Xenopus borealis hosts of the same age, it is possible to distinguish the cell populations of the host and donor due to the peculiar nuclear Q bands specific to X. borealis. I have replaced the eye anlage in each of a number of X. borealis with the transplanted olfactory placode of an individual X. laevis, or vice versa. In most instances, the placode of the donor fuses with that of the host. When fusion occurs, but not when the host and donor orqans grow separately, the cells of the donor were replaced gradually and according to a characteristic pattern by cells of the host. The basal cells of the donor were the first to be replaced, followed by the more matured cells of the sensory epithelium. This cellular substitution, proceeding in an orderly fashion from bottom to upper layers of the epithelium, depends on the fusion of the two organs. This observation suggests intercellular contacts in the mitotic zone of the two organs favor the host's cells over those of the donor.

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참고문헌

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