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The Segmentation of the Primitive Neural Tube in Chick Embryos (Gallus Domesticus) - A Morphological, Histochemical and Autoradiographical Investigation (German, Paperback, 1969 ed.)
Loot Price: R1,647
Discovery Miles 16 470
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The Segmentation of the Primitive Neural Tube in Chick Embryos (Gallus Domesticus) - A Morphological, Histochemical and Autoradiographical Investigation (German, Paperback, 1969 ed.)
Series: Advances in Anatomy, Embryology and Cell Biology, 41
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Total price: R1,667
Discovery Miles: 16 670
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In a study of early neuroblast migration in the mesencephalon and
rhomb- encephalon (VAAGE, 1965) it was observed that columns of
neuroblasts labelled with tritiated thymidine migrated extensively
in the mantle zone. In order to determine the route of migration of
the neuroblasts, it was essential to define points to which the
columns of neuroblasts could be referred. During the investiga-
tion a cellfree zone was observed between the mesencephalic and
rhombencephalic mantles, presumably identical with the m -segment
described by PALMGREN 2 (1921). Several recent investigators
(BENGMARK et al., 1953; BERGQUIST and KALLEN, 1954), however,
advocate that no morphological boundary exists between the
mesencephalon and rhombencephalon. These divergent observations and
interpretations of the morphology of the neural tube in the
mesencephalon and rhombencephalon prompted me to review the
relevant old and recent literature concerning the morphogenesis of
the neural tube. It turned out that rather divergent views on this
subject are found in the literature. It was therefore deemed to be
of interest to undertake a reinvestigation of the early
neurogenesis. The results of this investigation are presented in
this paper. As will be seen the findings concerning the
neurogenesis in the chick support the opinions of several previous
investigators, but in addition some new information has been
obtained. Since the early neurogenesis is principally identical in
chick and man the present investigation, therefore, may shed some
light on the early morphogenesis in the central nervous system also
in man. I. Introduction A.
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