Fig. 85. — Trichina spiralis. A, encysted form in muscle of host; B, female; C, 

 male, bh, connective tissue envelope; cy, cyst; de, ejaculatory duct; e, em- 

 bryos ; f. fat globules; /:, testis; m. f, muscle fibre; oe, pharynx; or, ovary; 

 ivo, gonopore; zh, cell masses in intestine. (From Lang's Comparative 

 Anatomy ', after Clans.) 



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