2 6 The Anatomy of the Salivary Glands 



Changes during activity. Siekevitz and Palade (1958) have re- 

 ported striking changes in the e.r. in pancreatic cells after feeding. 

 Large cisternae developed around the apical secretory granules and 

 small free granules appeared in the wall of the cavities (Palade, 





6 



i 









'• 





><*^ 



Fig. 2.10. Electron micrograph of mucous cell of the rat parotid. 

 Endoplasmic reticulum (er) shown as long slender profiles which are transverse sections of 

 flattened cisternae. Mitochondria (m), nucleus (w). A is part of a myoepithelial cell (Porter, IQS4). 



19566). Gautier and Diomede-Fresa (1953) and Manni (1957) have 

 reported changes in the e.r., mitochondria and cell nuclei following 

 stimulation, but Sjostrand and Hanzon (1954^) consider these to 

 be artefacts due to inadequate fixation. The latter found no changes 



