by electron microscopy , short microvilli , tight junctions between two adjacent cells , appearance of osmiophilic lamellar bodies , large mitochondria of irregular shape , well developed golgi complexes , continuous or discontinuous basement membranes , occasional appearance of `` '' sequestration '' '' and of crystalloids and lack of both cilia and mucous secretory granules were observed as characteristic features of the neoplastic cells .
C0007634
cells
C0026237
mitochondria