Stained |Stained shows | chromatin lining| wall free from | shows wall free | fine beads of | wall. Karyosome | chromatin. All | from chromatin | chromatin | spherical, | chromatin cont-| as a rule. | lining wall. | eccentric and | ained in large,|Typically |Karyosome small,| larger than | irregular, | chromatin cont- | spherical and | that of | eccentric | ained in large, | central. | E. histolytica. | karyosome. | central | | |Variations in | spherical | | | shape of | karyosome. Zone | | | karyosome | between nuclear | | | characteristic.| wall and | | | | karyosome | | | | filled with | | | | single layer of | | | |small granules. -----+----------------+-----------------+----------------+---------------- (Part 1 of 2) ----------------------------------------------------------------- ENCYSTED STAGE -----------+------------------------+---------------------------+ | Entamoeba histolytica | Entamoeba coli | -----------+------------------------+---------------------------+ Size | 7-15µ | 15-20µ | -----------+------------------------+---------------------------+ Shape | Round. | Round. | -----------+------------------------+---------------------------+ Wall | Thin. | Thicker than E. | | | histolytica. | -----------+------------------------+---------------------------+ Nuclei |Typically shows four |Typically shows eight | |nuclei. May show one to |nuclei. May show one to | |four. Nuclei at rest |twenty. Structurally | |structurally similar to |similar to adult nucleus. | |that of adult nucleus. | | | | | -----------+------------------------+---------------------------+ Chromatoids|Large chromatoids |Large chromatoids may be | |common. |present but usually absent.| -----------+------------------------+---------------------------+ Glycogen |Diffuse but not |Relatively abundant in the | |abundant. |early stages. Scanty or | | |absent in mature cysts. | -----------+------------------------+---------------------------+