Studies on the heterogeneity of cell populations in amphibian presumptive epidermis, with reference to primary induction

Ave, Kiichiro; Kawakami, Izumi; Sameshima, M

doi:10.1016/0012-1606(68)90009-2

Cited by 21 publications

(3 citation statements)

References 3 publications

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“…The idea of coordination is supported by JOHNEN'S in vivo experiments (13, 14). The widely diverging results, which characterize the time of occurrence of cranial impulses with in vitro aged organizers (23)(24)(25)(26)(27) point in this direction, too. In series A1 cranialization appears in an earlier stage than invagination would have been observed (see above, series Al).…”

Section: Discussionmentioning

confidence: 91%

Early Reciprocal Interactions between Ectoderm and Chordamesoderm: Statistical Evaluation of Classical Embryological Experiments

Leyhausen

1987

Dev Growth Differ

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Embryos of the urodele Ambystoma mexicanum were used in time set experiments for the analysis of ectoderm-chordamesoderm interactions in "primary embryonic induction". The influence of chordamesoderm-age (CM-age), ectoderm-age (E-age), ectoderm-mass (E-mass) on differentiation processes were investigated. The results revealed that early interactions exist, which, however, seem to be dominated by the ectoderm in various respect: a) the segregation of the CNS is due to the autonomous change in ectoderm competence phases; b) based on the temporal sequence of competence phases, influences are exerted by the ecto-neuroderm which support the chordamesoderm in its self-differentiation capability to chorda and other mesodermal tissues. Consequently, reciprocal impulses from these newly differentiated tissues are warranted (feedback to ectoderm); c) coordination of the cranialization effect and corresponding ectodermal competence phase is achieved; d) the inductive efficiency of the chordamesoderm is strongly supported.Three statistical tests (regression, correlation, information analyses) were conducted (dependant variables: quality and quantity of the differentiated structures; independant variables: experimental factors). All three tests equally rendered statistical significance for the following order of decreasing importance the experimental factors play in induction and differentiation processes: E-age, E-mass, CM-age.

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Section: Discussionmentioning

confidence: 91%

Early Reciprocal Interactions between Ectoderm and Chordamesoderm: Statistical Evaluation of Classical Embryological Experiments

Leyhausen

1987

Dev Growth Differ

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“…The details 01 the electrophoretic procedure and apparatus were the same as those described in the pevious paper ( AVE et al, 1968). : We had expected that there wouId be no change of competence in Triturus embryos before the presumptive ectoderm of gastrula is underlaid by the invaginating archenteron roof; i.e., before the end of the middle gastrula stage having a horseshoe-shaped blastopore.…”

Section: Methodsmentioning

confidence: 99%

COMPETENCE AND ELECTROPHORETIC SPECTRUM OF THE CELLS DISSOCIATED FROM TRITURUS GASTRULA ECTODERM

Kawakami¹,

Watanabe²,

Ave³

et al. 1969

Dev Growth Differ

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“…The electrophoretic pattern of the dissociated cells was tested on presum ptive ectoderm newly isolated from early gastrulae and on ectodermal isolates precultured for 12 and 16 hours. The details 01 the electrophoretic procedure and apparatus were the same as those described in the pevious paper ( AVE et al, 1968). : We had expected that there wouId be no change of competence in Triturus embryos before the presumptive ectoderm of gastrula is underlaid by the invaginating archenteron roof; i.e., before the end of the middle gastrula stage having a horseshoe-shaped blastopore.…”

Section: Introductionmentioning

confidence: 99%

Competence and Electrophoretic Spectrum of the Cells Dissociated From Triturus Gastrula Ectoderm

Kawakami¹,

Watanabe²,

Ave³

et al. 1969

Dev Growth Differ

Self Cite

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Studies on the heterogeneity of cell populations in amphibian presumptive epidermis, with reference to primary induction

Cited by 21 publications

References 3 publications

Early Reciprocal Interactions between Ectoderm and Chordamesoderm: Statistical Evaluation of Classical Embryological Experiments

Early Reciprocal Interactions between Ectoderm and Chordamesoderm: Statistical Evaluation of Classical Embryological Experiments

COMPETENCE AND ELECTROPHORETIC SPECTRUM OF THE CELLS DISSOCIATED FROM TRITURUS GASTRULA ECTODERM

Competence and Electrophoretic Spectrum of the Cells Dissociated From Triturus Gastrula Ectoderm

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