. Pathological technique; a practical manual for workers in pathological histology and bacteriology. ™ i 1 Fig. 123.— Entamoeba histolytica in section of ulcer of intestine; X 500 (photoby F. B. Mallory). 3. Differentiate in a 2 per cent, aqueous solution of oxalicacid for one-half to one minute. 4. Wash in water. 5. Dehydrate in absolute alcohol 6. Clear in xylol. 7. Xylol-balsam. The nuclei of the amebae and the granules of the mast-cells are stained brownish red; the nuclei of the mast-cellsand of all other cells are stained blue. ANIMAL PARASITES. 383 Entamoeba coli,Schaudinn, 1903. Entamo
. Pathological technique; a practical manual for workers in pathological histology and bacteriology. ™ i 1 Fig. 123.— Entamoeba histolytica in section of ulcer of intestine; X 500 (photoby F. B. Mallory). 3. Differentiate in a 2 per cent, aqueous solution of oxalicacid for one-half to one minute. 4. Wash in water. 5. Dehydrate in absolute alcohol 6. Clear in xylol. 7. Xylol-balsam. The nuclei of the amebae and the granules of the mast-cells are stained brownish red; the nuclei of the mast-cellsand of all other cells are stained blue. ANIMAL PARASITES. 383 Entamoeba coli,Schaudinn, 1903. Entamoebahistolytica,Schaudinn,1903. p3a Ten to 30 microns, generally smaller than entamoeba histolytica or entamoeba tetragena. Ten to 70microns,generallyfrom 15 to40 microns. 9 Small, blunt,and not clear-ly differentia-ted from restof parasite. Blunt or slen-der and finger-shaped. Veryrefractive andclearly differ-entiated fromrest of theparasite 2 a. 0 O O Ectoplasm not dis-tinct, except whenmoving, and thenonly because it isfree from grayish in colorand not very re-
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