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Developmental changes in the chromatin of the brain of the rat: analysis by nicktranslation

✍ Scribed by B. R. Das; M. S. Kanungo

Publisher
Springer
Year
1986
Tongue
English
Weight
221 KB
Volume
11
Category
Article
ISSN
0301-4851

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✦ Synopsis

Nick translation of nuclei of the brain of 3- 14- and 30-day old rats was carried out following their digestion by DNase I. The incorporation of 3H-dTMP at 14- and 30-day is significantly lower than at 3-day. This may be due to a lower proportion of active chromatin (DNase I hypersensitive sites) and condensation of chromatin with progressive development. When nuclei were digested by EcoRI and then nick-translated, the incorporation of 3H-dTMP showed the same pattern. Since the EcoRI sites are believed to be randomly distributed, the overall conformation of chromatin including the DNase I sensitive sites seems to undergo increasing compaction with development.

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