I'llYRJOLOOY <»l Till hi... - i i\ i .,i v 



H9 



filled with granules or small globules, which are often •-<> numerous 



••lliiHist entirely to obliterate the nucleus. When the gland I mea acl 



on the other hand, the granules or globules leave the cells, »r :• 



few which remain inward the lumen border. Pigs. 143 and 14} 



B. 





Fig. 143.— Cells of parotid gland showing z 



moderate secretion; C, after prolonged secretion. (From I 



These observations indicate thai the granular or globular material m 

 represent part at least of the secretion of the glands. Sometimes, even 

 before they are extruded, the granules become changed me difl 



ciii material, as is indicated by the fact thai they stain differently from 







A. 





: 'r 



-f 





Fig. 144. — Parotid glaud ol 

 upper left-hand acini are The upper right-ha 



activity by injecting pilocarpine, and I 

 pathetic nerve. (After tangle; 



those of the resting gland. It musl not be thought, 1 thai an 



extrusion of granules necessarily accompanies * \ity. 

 under certain conditions a copious secretio 



as well as a certain amounl of organic material, d ! with- 



