Chapter 11 



Protozoa parasitic in the muscle and 

 the reproductive organ 



In the muscle 

 1. Sarcocystis lindemanni (Rivoha 1878) 



THIS sporozoan is responsible for the sarcosporidiosis in 

 man which is very rare, and has been reported from 

 the tropical regions. It invades the muscle cells of man. 

 Information on the species which attack the human body is 

 very incomplete. The questions such as what species occur 

 in man and how man is infected, etc., are unanswered at 

 present. The published records indicate that there is a 

 wide morphological variation among the organisms ob- 

 served by different workers. 



The organism is oval to spindle form and imbedded in 

 the muscle cell of larynx, biceps, tongue, heart, chest, etc. 

 The infected muscles seem to become distended owing to 

 the growth of the parasite within. The infected muscles 

 may be seen white-streaked to the naked eye. Seen in sec- 

 tions, the body of the organism (Fig. 28) may be divided 

 into numerous compartments. The size of the organisms 

 varies a great deal according to different observers: 16 mm. 

 by 170|j, 5.3 cm. by 320m, 84m by 27m. Near the peripheral 

 zone are found rounded sporoblasts and in the central 

 area crescentic or banana-shaped spores occur usually in 

 abundance. The size of the spores also differs among dif- 

 ferent cases: 8-9m long; over 10m long; 8.33m by 1.6m; 4.25m 



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