VARIOUS HUMAN SARCOMAS 



117 



gradation of forms leading up to them from the tissue-cells of the 

 tumour, and many of them are devoid of nucleus that is, are in 

 the chromidial state common in protozoa. 



' Fig. 46 ; 2, is more like a budding suctorian 1 than any human 

 cell. It is only when cancer or sarcoma tissue is studied -broadly 



FIG. 46. MYXOSARCOMA OF THE UTERUS, (x 1,000 diameters.) 



Three cells from a myxosarcoma of the uterus. These cells, according to the 

 author, are protozoa: i, Large cell undergoing mitotic binary fission; 2, large 

 cell with multiple budding and irregular mitosis ; 3, large non-nucleated 

 parasite within a capillary bloodvessel or a connective-tissue cell. 



from the point of view of the origin of the tissue elements, and by 

 patient training of the eye by previous study of recognised parasitic 



1 It must not be inferred from this that I deem them to belong to the suctoria. 

 On the contrary, I think we must be prepared to learn that the forms assumed by 

 parasitic protozoa are more protean than has hitherto been thought possible. It 

 should be remembered that spirochaetes have been described in some cancers, and 

 I am prepared to find different kinds of protozoa in different cancers. 



