Titlebook: Development of the Retinotectal Projection in the Chicken; Günter H. Rager Book 1980 The Editor(s) (if applicable) and The Author(s), unde

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Development of the Retinotectal Projection in the Chicken

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Introduction, form.”The ultimate aim of a physiological derivation would be that laws of growth valid for organic beings can be expressed as mathematical formulae (His 1874). To exemplify this, he formulated a universal and purely formal law of growth in mathematical terms making the comment: “I now suggest that

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0301-5556 athematical formulae (His 1874). To exemplify this, he formulated a universal and purely formal law of growth in mathematical terms making the comment: "I now s978-3-540-10121-5978-3-642-67681-9Series ISSN 0301-5556 Series E-ISSN 2192-7065

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Hans-Peter Kruse,Friedrich Kuhlencordt form.”The ultimate aim of a physiological derivation would be that laws of growth valid for organic beings can be expressed as mathematical formulae (His 1874). To exemplify this, he formulated a universal and purely formal law of growth in mathematical terms making the comment: “I now suggest that

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Blutelemente und Blutfarbstoff,f ganglion cells. It certainly marks a “catastrophe point”(Thorn 1975) in their development. This is similar to the original finding of Ramón y Cajal and Lenhossek obtained from studying the development of motoneurones in the spinal cord of chick embryos. “Dendrites appear on neuroblasts only when t

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Material and Methods, onwards the eggs were transferred to a hatching incubator running at 37.2 °c and a relative humidity of 75%–80%. Only those animals whose time of hatching was determined precisely were used for experiments in the post-hatching period. The age of all animals was measured in days and hours of ontogenesis.

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0301-5556 ntal and simple laws and submit to the general laws of nature" (His 1901). Therefore, we should be able to find immediate conditions, dependencies and rules determining the de- velopment of an organic form. With this in mind, His (1874) defined the task of embryology as follows: "Developmental biolo

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Grundzüge der Pathologischen Physiologie onwards the eggs were transferred to a hatching incubator running at 37.2 °c and a relative humidity of 75%–80%. Only those animals whose time of hatching was determined precisely were used for experiments in the post-hatching period. The age of all animals was measured in days and hours of ontogenesis.