to explore whether morphometry of intracellular membrane-limited subcompartments can be used to follow physiological volume changes in such subcompartments in hearts rapidly fixed by perfusion fixation , we have measured osmotically induced volume changes in electron micrographs of longitudinally oriented sarcoplasmic reticulum ( lsr ) and terminal cisterns ( tc ) of rat left ventricular myocardial cells .
C0021868
intracellular membrane
C0007634
cells