Structural units in chromatin and their orientation on membranes.
D000818:Animals; D001001:Anura; D002462:Cell Membrane; D002467:Cell Nucleus; D002642:Chick Embryo; D002645:Chickens; D003593:Cytoplasm; D004524:Eels; D004912:Erythrocytes / Q000166:cytology*; D007962:Leukocytes / Q000166:cytology; D008854:Microscopy, Electron; D008961:Models, Structural; D013194:Staining and Labeling; D014562:Caudata