INTESTINAL FLAGELLATES OF RATS 



127 



connective tissue stain or by the wet method of using Giemsa's 

 stain. 



B. Dried films. These do not usually give results that are satis- 

 factory for cytological details but may be very useful for counting 

 flagella and for quick identification. Dried smears may be fixed in 

 alcohol, then stained with Giemsa's stain, or Wright's or Leish- 

 man's stains may be used, as for blood films. 



IDENTIFICATION OF SPECIES 



I. General statement 



Identification of intestinal flagellates involves not only a knowl- 

 edge of their morphology but also of their life histories and host- 



FiG. 12. — Flagellates of rats, a, Tritrichomonas muris, trophozoite; b, same, 

 cyst-like stage; c, Tritrichomonas mimita; d, Tritrichomonas parva; e, 

 Hexam^astix muris; f, Pentatrichomonas sp(?). 



