[Leptofibrils in rat ventricular cardiomyocytes in vitro].
The presence of leptofibrils in ventricular myocytes of the heart of the 2- and 14-day old rats in 8-day old cultures was shown and their structure was investigated. Leptofibrils are seen only in myocytes on a definite stage of differentiation. Leptofibrils are attached to Z-bands running parallel or perpendicular to myofibrils. The period of their cross striation varies from 135 to 215 nm. Possible functions of the leptofibrils are discussed.
D000818:Animals; D002454:Cell Differentiation; D002478:Cells, Cultured; D006352:Heart Ventricles / Q000648:ultrastructure; D008854:Microscopy, Electron; D009206:Myocardium / Q000648:ultrastructure*; D009210:Myofibrils / Q000648:ultrastructure*; D051381:Rats
Leptofibrilly v zheludochkovykh kardiomiotsitakh krys in vitro.