130 



AMEB,E 



FIG. 36. Endamceba histolytica. X 1650. A, stained vegetative ameba; 

 B, cyst with four nuclei; n., nucleus, showing peripheral chromatin granules and 

 central karyosome; r. b. c., ingested red blood corpuscles; chr. b., chromatoid 

 body. (After Dobell.) 



FIG. 37. Endamceba coli. X 1650. A, stained vegetative ameba; B, cyst, 

 with eight nuclei; n., nucleus, showing coarse peripheral chromatin granules, 

 chromatin granules in "clear zone" between periphery and karyosome, and 

 eccentric karyosome; chr. b., remnant of chromatoid body. Note large number 

 of food vacuoles in vegetative ameba. (After Dobell.) 



FIG. 38. Endolimax nana. X 1650. A, two stained vegetative forms, show- 

 ing nuclei with large irregular karyosome, and numerous food vacuoles. B, cyst 

 with four nuclei. (After Dobell.) 



