Reaction of human heterochromatin and euchromatin to spermine
โ Scribed by L. V. Potoki
- Book ID
- 104938957
- Publisher
- Springer US
- Year
- 1975
- Tongue
- English
- Weight
- 593 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0007-4888
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The localization of the absorption peaks of toluidine blue-stained heterochromatin (Ho and Hs) and euchromatin (Eo and Es) of the Malpighian tubules of the blood-sucking hemipteran, Triatoma infestans Klug was studied cytophotometrically (Ho and Eo: hetero- and euchromatin of nuclei with one single
In two rodent species, the Chinese hamster and the montane vole (Microtus montanus), the rate of sister chromatid exchange was lower in constitutive heterochromatin than in euchromatin.
Human chromosomes and interphase nuclei labeled with 3H-thymidine and treated with the ASG and trypsin technique for G banding show no DNA loss. However, after G 11 and C banding significantly more DNA is removed from euchromatin than from constitutive heterochromatin.