210 THE ANIMAL PARASITES OF MAN 



4. The body next breaks up into a number of smaller bodies 

 known as initial corpuscles. These, in their turn, divide by simple 

 division (in the manner already described) into numerous elementary 

 bodies (fig. 119). Thus, the life-cycle is completed. 



The Chlamydozoa are, then, the minute granules inside the body of 

 the Cytoryctes variolce or the Nenroryctes hydrophobia?, so that the whole 

 body of the Cytoryctes or Nenroryctes corresponds to the mantle and 

 parasite of the Chlamydozoon. The Cytoryctes group is said to 

 cause destruction of the host cell. The Cytooikon group (e.g., 

 trachoma bodies) causes proliferation of the host cell. 



In September, 1913, Noguchi * described the cultivation of the 

 parasite of rabies in an artificial medium, similar to that used by^him 

 for the cultivation of Spirochceta recnrrentis. The cultures were stated 

 to be infective to dogs, rabbits and guinea-pigs. Levaditi, in 

 December, 1913, stated that he had succeeded in cultivating spinal 

 ganglia of rabid monkeys in monkey plasma. 



Noguchi and Cohen (November, 1913) 2 have succeeded in 

 cultivating the so-called trachoma bodies, or at any rate bodies 

 very closely resembling them morphologically. The medium 

 employed was Noguchi's ascitic fluid and rabbit kidney medium, as 

 used for spirochaetes. The coarser cultural forms stained blue with 

 Giemsa's solution, the finer ones stained red. Attempts to infect 

 monkeys from the culture tubes failed. 



From their behaviour on treatment with such reagents as saponin, 

 bile and sodium taurocholate, Prowazek considers that the Chlamy- 

 dozoa approach the Protozoa. 



PROTOZOA INCERT^E SEDIS. 

 Sergentella hominis, Brumpt, 1910. 



Et. and Ed. Sergent in 1908 found vermiform bodies about 40 p 

 long by i fjb to 1*5 //, broad in the blood of an Algerian suffering from 

 nausea and cold sweats, without other symptoms. The bodies were 

 pointed at each end, with a somewhat ill-defined nucleus in the 

 middle. Their systematic position is doubtful. 



1 fourn. Exptl. Med., xviii, p. 314. 



2 Idem, p. 572. 



