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Some enzymes in the process of differentiation of neurons of the spinal ganglion spinal cord and tectum opticum in the chick embryo a cyto photometric histochemical study



Some enzymes in the process of differentiation of neurons of the spinal ganglion spinal cord and tectum opticum in the chick embryo a cyto photometric histochemical study



Ontogenez 14(1): 64-72



Changes in the activity of 13 enzymes are described in the process of cytodifferentiation of the nerve cells of spinal ganglion, the motor neurons of spinal cord and large nerve cells of the III layer of the tectum opticum in 7-, 10- and 21-day-old chick embryos. Cytophotometry was performed with MZFV-1 (LOMO) [an apparatus] by means of a plug-method. A relatively high activity of glucose-6-phosphate dehydrogenase, diaphorase, .alpha.-glycerophosphate dehydrogenase and acetylcholine esterase was found already in the 7-day-old embryo. The activity of monoamine oxidase, aldolase-glyceraldehyde phosphate dehydrogenase, isocitrate dehydrogenase and glutamate dehydrogenase increased markedly on the 21st day. When studying the reciprocal distribution of 2 enzymes in separate cells, pairs of enzymes with a high value of correlation coefficient were found. The cytodifferentiation was accompanied by changes in the correlation coefficient of the same pair of enzymes.

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Accession: 006442575

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