Induction of the neural canal in young blastoderms of chick embryos (Gallus domesticus). An optic and electron microscopic study

F. Llopart, J. M. Domenech Mateu

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Abstract

Induced neuroepithelium in young blastoderms is studied by light and transmission electron microscopy. Of the 100 operated blastoderms, 30 developed perfect inductions. The neuroepithelium showed radially located nuclei in the cells demonstrating that these are true inductions and never evocations. The TEM study showed that the ultrastructural characteristics of the induced nervous system coincided with those of control. However, structures such as the cell junctions, the presence of annulate lamellae, the index pinocytosis, the exocytosis images, and the localization of ribosomes and polysomes had special characteristics which were more peculiar to the induced neuroepithelium. The presence of annulate lamellae is related to the rapid growth and degree of differentiation of this neural cell system.
Original languageEnglish
Pages (from-to)18-21
JournalFolia morphologica
Volume29
Issue number1
Publication statusPublished - 1 Jan 1981

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