SERGENTELLA HOMINIS 



537 



body like a nucleus, composed of a periphery of chromatin, and containing 

 a central chromatic particle staining red. Negri, Williams, and Lowden give 

 drawings indicating the rapid division and growth of the organism, which 

 apparently as it grows divides, until finally large forms result whose chromatin 

 breaks up into minute masses. 



They consider that the parasite reaches the nervous system by spreading 

 along the nerves, which it does more quickly than travelling by the blood. 



Cyclasterella scarlatinalis Mallory (Doubtful Species). 



In 1904 Mallory described round and elongated bodies, sharply stained 

 with methylene blue, 2 to 7 ^ in size, lying in the epithelium of the epidermis, 

 together with radiate bodies, composed of a central spherical body with ten 

 to eighteen segments radiating away from it, in epithelial cells and lymph- 

 spaces of the epidermis of people sufiering from scarlet fever. 



This discovery has since been confirmed by Field and Duval, both during 

 life and in post-mortems. 



Further research is needed before the nature of these bodies can be definitely 

 settled. 



Fig. 197. — Sevgentella hominis Fig. 198. — Sarcocystis Spores 



Brumpt. found in the Blood of Man by 



Castellani and Willey. 



Coccidioides immitis Rixford and Gilchrist, 1897 (A Fungus). 



Synonyms. — C. pyogenes Rixford and Gilchrist, 1897; Coccidium posades 

 Caxton (?), 1898. 



These parasites were first seen by Wernicke and Possadas in Buenos Ayres, 

 and later in the United States by Rixford and Gilchrist, Montgomery, Moffit, 

 and Ophiils, where they cause an infection producing nodules in the skin, 

 liver, kidney, genitalia, and lymphatic glands. 



This so-called protozoon is a fungus (see p. 985). 



The Bodies of Ureteritis Cystica (Doubtful). 



In this disease the kidney is hydronephritic and the ureter and bladder 

 are cystic. 



The cysts contain large and small oval and irregular cells with bright 

 globules, variously interpreted as Coccidia, Myxosporidia, and cell inclusions. 



Sergentella hominis Brumpt, 1910. 

 Et. and Ed. Sergent in 1903 reported a vermiform body, 40 fju long by i to 

 1-5 broad, pointed at each end, with a nucleus in the middle, in the blood 

 of a person sufiering from night-sweats and nausea. 



