[Secretory granules in cardiomyocytes].
The specific granules having the appearance of spherical formations of 2000-4000 A in diameter are described in the cardiocytes of the atria and ventricles of mature frogs (R. temporaria). Each granule consists of electron dense granular matrix and a membrane up to 60 A trick. The amount of these granules in the cardiomyocytes of the atria is greater and they occasionally form accumulations, connected as a rule with the elements of the lamellar complex. The rough reticulum is better developed in the cells containing clusters of granules. The granules described are considered to be secretory ones.
D000818:Animals; D003594:Cytoplasmic Granules / Q000648:ultrastructure*; D009206:Myocardium / Q000648:ultrastructure*; D011896:Rana temporaria / Q000033:anatomy & histology
O sekretornykh granulakh v kardiomiotsitakh