The "paired cisternae" in mitotic cells of the pigeon esophageal epithelium.
D000818:Animals; D001485:Basement Membrane / Q000166:cytology; D002462:Cell Membrane; D010856:Columbidae; D004847:Epithelial Cells; D004947:Esophagus / Q000166:cytology*; D008854:Microscopy, Electron; D008938:Mitosis; D009092:Mucous Membrane / Q000166:cytology; D012270:Ribosomes; D013997:Time Factors