ON THE INFECTIVE GENITAL TUMOURS OF DOGS 131 



the prominent intranuclear bodies that are present in about three- 

 ourths of the nuclei. The general appearance of the lesion at this 



FIG. 52, INFECTIVE TUMOUR OF DOGS : THE FULLY DEVELOPED STAGE. 

 (From the section Fig. 49 ; 2. Camera drawing ; x 800 diameters.) 



The interrupted capillaries will be noted: I and i', cells distended by cell-inclu- 

 sions ; cells with active nuclei, as at 2 and 3 ; and cells with amoeboid bodies 

 close to empty nuclei, as at 4. 



stage is typically sarcomatous. It is not the end of the process, and 

 should be regarded, I think, as the middle stage. 



The climax of the process is the point at which protozoa, if 



92 



