H2 SOME MINUTE ANIMAL PARASITES 



Leucocytozoa, especially those inhabiting the blood 

 of birds. These organisms may produce peculiar 

 deformities of the cells they inhabit (Fig. 24) so 

 that the latter appear spindle-shaped and deformed. 

 The male and female mother cells are most common 



a. 



B. 



FIG. 24 MALE AND FEMALE GAMETOCYTES OF LEUCOCYTOZOON 

 LOVATI, FROM THE BLOOD OF THE GROUSE 



A, Microgametoeyte, with pale - staining cytoplasm and rather 

 granular nucleus ; B, macrogamete, with deep-staining cyto- 

 plasm and more vesicular nucleus with karyosome (the host cell 

 has become spindle-shaped in each case, with its nucleus [a] 

 pushed to one side by the parasite) 



in the circulating blood. The microgametocyte 

 (Fig. 24, A) is smaller than the female mother cell, 

 has a more granular nucleus, and feebly staining 

 cytoplasm. The macrogamete (Fig. 24, B) is rather 

 larger, has much more granular cytoplasm, and a 

 smaller, more vesicular nucleus. The full details 

 of sporogony are not known. Until 1910 the 



