title: Stereo electron microscopy of the 25-nm chromatin fibers in isolated nuclei.
abstract: Thin sections (0.1-0.25 micron) of isolated chicken erythrocyte nuclei were examined at various tilt angles. Stereo pairs of electron micrographs document the parallel alignment of 25-nm chromatin fibers adjacent to the nuclear envelope, and demonstrate a fiber substructure consistent with close-packed arrays of nucleosomes.
mesh_terms: D000818:Animals; D002467:Cell Nucleus / Q000648:ultrastructure*; D002645:Chickens; D002843:Chromatin / Q000648:ultrastructure*; D004912:Erythrocytes / Q000648:ultrastructure; D008854:Microscopy, Electron; D013347:Subcellular Fractions
chemical_list: D002843:Chromatin