Untersuchungen zur Klärung der Leistungsspezifität verschiedener abnormer Induktoren bei der Embryonalentwicklung der Urodelen

Engländer, Hans; Johnen, Anna Gisela; Vahs, Wilfried

doi:10.1007/bf02178336

Cited by 24 publications

(2 citation statements)

References 3 publications

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“…The shift of regionality from the spino-caudal to deuterencephalic as observed in the present study between PNP series and the original extract A (Table 2) suggests that the procedure necessary for isolation of PNP from the kidney also has some effect of changing the regionality in the same direction. Further the change in the regional effect of some adult tissues as demonstrated by ENGLANDER, VAHS and JOHNEN (1953) and by VAHS (1955) appears to be closely related to this phenomenon. The extensive work of KUUSI (1951,1953) comprises cases of apparently comparable change in the induction specificity of tissues and their fractions.…”

Section: Discussionmentioning

confidence: 81%

Spino-Caudal Induction by Pentose Nucleoprotein Isolated From the Kidney*

Yamada

Takata

1956

Embryologia

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Section: Discussionmentioning

confidence: 81%

Spino-Caudal Induction by Pentose Nucleoprotein Isolated From the Kidney*

Yamada

Takata

1956

Embryologia

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“…The type, however, is not always the same among those induced by homotypic tissues from different kinds of animals. For example, as contrast with almost purely neural or archenphalic induction by guinea-pig and rat liver (12,25), livers of newt and mouse are archencephalicdeuterencephalic inductor (1,2,4), showing mesoderm inducing capacity mixed with neural inductive one, though the former is weak.…”

mentioning

confidence: 99%

Difference in Inductive Effect of Liver Tissues With and Without Perisinusoidal Basement Membrane

1976

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Differential inductive capacities among liver tissues of several animals were examined by anticipating the correlation between the capacity and the completness of perisinusoidal basement membrane.The reacting tissue was competent ectoderm of gastrula of Triturus pyrrhogaster, and the inductive effects of livers on the ectoderm were tested by explantation method. The inductive effect of livers being devoid of the membrane (chick and guinea pig) was neural and the tissues having the dense well-developed membrane (reptiles) produced an assembly of neural and mesodermal tissues, such as notochord and somite or muscle. The livers with the membrane being of intermediate grade of development (calf, Triturus and mouse) induce mesodermal tissues, but not frequently, together with neural tissue or alone. The liver tissue was more active in mesodermal induction in proportion to the completeness of the perisinusoidal basement membrane.On the basis of these data the difference in inductive capacity among liver tissues from different kinds of animals were discussed.

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An analysis of spino‐caudal induction by the guinea pig kidney in the isolated ectoderm of the Triturus‐gastrula

Yamada

Takata

1955

J. Exp. Zool.

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NINETEEN FIGURES SPINO-CAUDAL INDUCTION 293:is responsible for the cephalo-caudality of the obtained induction in such a way that the stronger its action, the more caudal the level which will be induced. If we adopt the termisology of regionality, which is based on a suggestion of I?. E. Lehmann ('45, p. 234) and used in the current literature by Toivonen, Kuusi and others, the idea can. be explained in the following way. The structures like eye, fore-brain, and nose, which are normally derived from the anterior part of the primary neural plate and its vicinity and are collectively called "archencephalic," will be induced in the presumptive ectoderlm, if Mdv alone acts on the ectoderm. The,,structures like somites and spinal cord, which are derived from the posterior part of the primary neural plate and are collectively called "spinocaudal," will be induo th of the factors, Mdv and Mcc are present and the of Mcc is maintained above a definite level. The st like mid-brain, hind-brain, and ear vesicle, which are derived normally from the intermediate part of the primary neural plate and its vicinity and are collectively called "deuterencephalic, " will be induced, if Mdv and Mcc are both present, but the activity of Mcc is less than the level above mentioned.These mediators cannot be called regionally specific inducing factors, because the inductive effect is not decided according to a simple one-to-one correspondence between the inducing factors and the regional types of induction. However Mcc

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Untersuchungen zur Klärung der Leistungsspezifität verschiedener abnormer Induktoren bei der Embryonalentwicklung der Urodelen

Cited by 24 publications

References 3 publications

Spino-Caudal Induction by Pentose Nucleoprotein Isolated From the Kidney*

Spino-Caudal Induction by Pentose Nucleoprotein Isolated From the Kidney*

Difference in Inductive Effect of Liver Tissues With and Without Perisinusoidal Basement Membrane

An analysis of spino‐caudal induction by the guinea pig kidney in the isolated ectoderm of the Triturus‐gastrula

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