84 PROTOZOAN PARASITISM 



origin which is conspicuous is the red blood corpus- 

 cle. 



Uncomplicated amoebic dysentery does not pro- 



FiG. 16. — Stool of Amoebic Dysentery. 



Red blood corpuscles and an amoeba with partially digested 

 corpuscles. Photomicrograph x 1000. 



duce the macrophage in the stool, while it is rather 

 characteristic of bacillary dysentery. 



In cases of the latter naturally there may be an 

 amoebic infection. If there is an exudate as of bacil- 

 lary dysentery in a stool containing Endamoeha histo- 



