electron microscopy of acinar cells of flight animals showed chromatin condensation , darkening of cells and nuclei , appearance of electron-dense vacuoles , fragmentation fo the granular endoplasmatic reticulum as well as enlargement of interstitial spaces , lumens of acini and intercellular canaliculi , loosening of basal membranes , and thinning of capillary walls .
C0008546
chromatin
C0007634
cells