Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Krystyna D. Ansevin"'
Publikováno v:
Journal of Experimental Zoology. 190:373-379
A technique for injecting large amounts of cytoplasm into early blastomeres of frog eggs is reported. It has been possible to replace part of the cytoplasm of animal blastomeres at the 8-cell stage with injected cytoplasm, some of which was also incl
Publikováno v:
Journal of Experimental Zoology. 208:233-243
Cytoplasmic preparations obtained from late blastulae and early gastrulae of normal R. pipiens eggs contain factors which induce delayed lethal effects when injected into normal eggs at the beginning of cleavage. The same preparations can rescue some
Publikováno v:
Journal of Engineering Materials and Technology. 96:131-137
Disaggregated cells of kidney, lung and liver of 14-day-old chick embryos were cultivated in vitro on several open-pore, organic-polymer sponges and on one gelatin sponge; in some cases this was followed by short-term, subcutaneous implantation into
Autor:
Krystyna D. Ansevin, Pamela J. Sperry
Publikováno v:
Development. 33:85-93
Lateral fragments which contained no nerve cord were isolated from the postpharyngeal body section of Dugesia dorotocephala and fused with nerve cord grafts soon after isolation and at daily intervals through 8 days of regeneration. Fragments fused s
Autor:
Krystyna D. Ansevin, Binie V. Lipps
Publikováno v:
The Biological Bulletin. 145:463-471
Tissue plate cultures on a sponge matrix were prepared from kidney or lung cells of 14- or 18-day chick embryos, of newly hatched clucks, and of chicks 2 or 4 days old. Two types of suspension were prepared from these cells and used for the cultures:
Publikováno v:
Journal of Experimental Zoology. 172:349-361
Differences in regeneration of isolated postpharyngeal body sections were observed in two laboratory groups of Dugesia tigrina. One group regenerated 14.8% of bipharyngeal specimens, which in some cases, also showed abnormal polarity. The other group
Autor:
Krystyna D. Ansevin
Publikováno v:
Development. 21:383-390
It appears certain that the process of cellular differentiation is an outcome of interactions between the cell nucleus and cell cytoplasm. Differentiation of embryonic amphibian ectoderm involves two fairly distinct phases: during the first short per
Autor:
Krystyna D. Ansevin
Publikováno v:
Journal of Experimental Zoology. 171:235-247
The influence on regeneration of a reversed head graft attached to the posterior end of the isolated postpharyngeal section of Dugesia tigrina was studied following removal of the graft after varying periods of time. After section-graft association f
Autor:
Ralph Buchsbaum, Krystyna D. Ansevin
Publikováno v:
Journal of Experimental Zoology. 146:153-161
Autor:
Krystyna D. Ansevin
Publikováno v:
School Science and Mathematics. 70:139-142