Electron microscopic observations and measurements were made on thin‐sectioned
chromatin fibers and fibrils obtained from nuclei of mature chicken erythrocytes. The nuclei …

Extremely large domains of the genome of resting cells (calf thymus) have been visualized
in the electron microscope by combining mild extraction procedures with a non-artifactual …

Nuclei from chicken erythrocytes and liver were isolated in saline and histone proteins were
fractionally dissociated by sequential acid extraction. At each stage nuclei were fixed both at …

The question as to how the strands of chromatin are packed into the eukaryotic nucleus has
intrigued biologists and biochemists for many years. Although there is ample space in the …

ABSTRACT A unit thread has been identified by electron microscopy as the common
structural element in the condensed chromatin of a variety of cell nuclei. From the previous …

Removal of histone Hl produces a transition in the structure of chromatin fibers as observed
by electron microscopy. Chromatin containing ail histone proteins appears as fibers with a …

Dark field scanning electron microscopy of unstained, unfixed samples of chromatin, histone-
1-depleted chromatin, and nucleohistone has been used to identify an apparent subunit of …

Non-destructive electron microscopy of native chromatin from rat liver nuclei reveals that the
30 nm fibre is formed of four 11 nm nucleofilaments, arranged in a coiled-coil (or rope-like) …

This bibliographic review, the first of a series of three on chromatin structure, discusses the
current knowledge and hypotheses concerning chromatin organization in nucleosomes and …

The effect of selective removal of histone proteins from chicken erythrocyte nuclei on the
process of reversible dispersal of chromatin in low ionic strength was examined in electron …