Histology of the Frog 117 



nucleus near the center. The cytoplasm is rather granular and, with 

 certain stains, shows a network of tiny fibers connected directly with 

 the fibrillae of the nerve fiber as well as with other processes of the 

 cell. There are several kinds of processes. The axis cylinder process, 

 already mentioned, requires a sheath and becomes part of a nerve fiber, 

 and the protoplasmic processes, sometimes several in number, are shorter 

 than the axis cylinder and usually branched. 



The cells themselves are designated as unipolar, bipolar, or multi- 

 polar, in accordance with the number of processes they may give forth. 

 Unipolar ganglion cells are found in the sympathetic ganglia. 



