ACNIDOSPORIDIA, SARCOSPORIDIA 



509 



S. Undemanni (Rivolta) (Fig. 240). A few cases of Sarcocystis 

 infection have been reported from man in muscle cells of larynx 

 (Baraban and St. Remy), of biceps and tongue (Darling), of heart 

 (Manifold), of breast (Vasudevan), etc. There seem to be dimensional 

 discrepancies of organisms observed by different investigators. The 

 dimensions of parasitic masses and of spores are as follows: Parasites 

 1.6 mm. by 170m and banana-shaped spores 8-9/x long (Baraban and 



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Fig. 240. Sarcocystis Undemanni in human muscle, X1150 (Kudo). 



St. Remy) ; parasites 84^ by 27)Lt and spores 4.25m by 1.75m (Darling) ; 

 parasites spherical, 500m in diameter and spores over 10m long 

 (Manifold); parasites 5.3 cm. by 320m and spores 8.33m by 1.6m 

 (Vasudevan). The parasitic masses are oval to spindle in form and 

 imbedded in the muscle cells which are distended, and may appear 

 white-streaked to naked eye. Seen in sections, the body is divided 

 into compartments. Gilmore, Kean and Posey (1942) have recently 

 found three bodies in sectioned heart muscles of an eleven year old 

 child who died from an unknown cause, and considered them as 

 sarcosporidian bodies. They measured 25m by 19m, 57m by 30m, and 



