298 



\"I:TJ:K1 XARY PAIHULOGV. 



and are variable in shape and arrangement. These tumors are 

 benign. 



Fig. 153. — r^ei<»m.> nnia. 



Smooth nucleus ci-U. showin,g nucleus. 



SARC0:\1A. 



A sarcoma is a tumor composed of embryonic connective tis- 

 sue cells. The cells have no tendencv to become mature but 

 constantly appear as undifferentiated embr3ronic cells. Sarcomata 

 are of frequent occurrence in all domestic animals. Thev have no 

 predilection for tissue or location, and are variable in size and 

 shape. They ma\- be circumscribed Init are more frequentlv dif- 



