[Packing of the chromatin fibers and the distribution of RNP in BK chromosomes].
The packing of the chromatin fibers and the distribution of RNP in bovine kidney (BK) chromosomes were studied by the combination of transmission, scanning electronic microscopy (TEM, SEM) and cytochemical electronic microscopy (CCEM). The results showed that BK chromosomes reveal a multiple double strand helical structure. The central axial area of each chromatid is a low electronic density region or chromatin free compartment, in which there are lots of RNP. In the peripheral chromatin region the RNP is distributed among the chromatin fibers and continued with that of the central region. The density of the central RNP is more than that of the peripheral RNP, which indicates that RNP is not uniformly distributed in chromosome.
Luo
Y
Y
Department of Biology, Beijing Normal University.
Liu
L
L
D000818:Animals; D002417:Cattle; D002843:Chromatin / Q000648:ultrastructure*; D007668:Kidney / Q000648:ultrastructure*; D012261:Ribonucleoproteins / Q000032:analysis*
D002843:Chromatin; D012261:Ribonucleoproteins