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SEM observations of the neural fold associated with neurulation in the rat
Abstract:
The topography of the ectoderm was examined by scanning electron microscopy during neurulation in rat embryos at stage 24 (somites 8-11). A zone of altered cell morphology was observed along the crest of neural folds. This zone was located between the presumptive neural tube and the surface ectoderm and exhibited numerous rounded cell blebs, immediately prior to fusion between the folds. It is suggested that the observed surface alterations may reflect a change in the properties of the altered cell which correlate with initial adhesion between the folds.
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