The cytoplasm of mucous epithelium cells of the intestinal track was full of a large number of highly electron-dense and obvious mitochondria as well as abundant pinocytotic vesicle bodies (Fig.
Cytoplasm contained abundant mitochondria and pinocytotic vesicles.
The apical cytoplasmic membrane forms pinocytotic pits, and the subapical cytoplasm contains numerous pinocytotic vesicles.
The apical cytoplasmic membrane has pi-nocytotic pits, and the apical cytoplasm contains a GA and pinocytotic vesicles.
The presence of pinocytotic vesicles in the apical cytoplasm is evidence that these cells are involved in the absorption of nutrients (Byrne, 1994), while the presence of phagosomes indicates that intracellular digestion may be one of their functions.
The small pits observed scattered over the cell surface probably represent pinocytotic vesicles
, previously documented (SVEDBERGH & BILL, 1972).
Intracytoplasmic pinocytotic vesicles were rarely found.
Some investigators observed typical characteristics of smooth muscle cells, including well-formed external laminae, pinocytotic vesicles, numerous cytoplasmic thin filaments, and subplasmalemmal dense patches.
Cilia were present only in few peripheral cells and close to them there were openings of pinocytotic vesicles like small pits.
Pinocytotic vesicles openings were observed, with similar characteristics to previous reports, ie.
were found beneath the plasma membranes, and cytoplasmic organelles were sparse, although swollen mitochondria, rough endoplasmic reticulum, lysosomes, and occasional collections of intermediate filaments were noted (Figure 4).
With ultrastructural observations of the intestinal muscle coat of mouse and bat, Yamamoto summarized the character of the ICC as being (1) slender cytoplasmic processes, (2) ample free ribosomes, (3) numerous pinocytotic vesicles
, and (4) a basement membrane that incompletely or completely covered them.