[Cytological analysis of the protein component of the nuclear chromatin in rat sympathetic neurocytes in postnatal ontogeny. II. The age-related changes in the nonhistone chromosomal proteins detectable by fast green and the matrix activity before and after extraction of the weakly bound fraction].

A cytophotometrical study was made of Fast Green FCF binding by nuclear non-histone proteins of the rat superior ganglion neurons at pH 2.6 (1 day, 1 week, 1 and 5 months, and 2.5 years after birth, a. b.). An increased dye binding by fraction NHP, stable in 0.35 M NaCl, was seen during the terminal cytodifferentiation (between days 7 and 14 a. b.). The extraction of a loosely bound fraction of non-histone proteins caused a decrease in the transcription level evaluated by the Moore method, throughout the whole postnatal ontogenesis, and no effect of extraction was noticed in respect of the AS-staining of nuclear histones.