first: This diagram deals with the life-cycle of entamoeba histolytica and not with the ultrastructure of the nucleus. For a good, useful diagram it is necessary to concentrate of the essentials and ommit arcane details for didactic reasons. However, after reading your message i made a little investigation regarding karyosomes. So here it is what i found: Karyosome is a dense area of chromatin in the nucleus, as it can be seen here in a iodamoeba buetschlii. In general it is recognised as a dark area inside the nucleus. Yet acording to the book "medizinische Mikrobiologie" (Ernst Wiesmann, Thieme 6. Auflage ISBN 3 13 444806 8) the Entamoeba histolytica species is not recognised by a prominant karyosome compared to e. g. iodamoeba buetschlii or endolimax nana. A similar much more simplified diagram for reference is here showing the same. It is therefore no need to include karysome appearance in this diagram. By the way today diagnosis of entamoeba species is done using Polymerase chain reaction and hardly with ultrastructural analysis because of the high failure rate relying on visual appearance.
Not promoted MER-C 06:51, 18 July 2008 (UTC)
first: This diagram deals with the life-cycle of entamoeba histolytica and not with the ultrastructure of the nucleus. For a good, useful diagram it is necessary to concentrate of the essentials and ommit arcane details for didactic reasons. However, after reading your message i made a little investigation regarding karyosomes. So here it is what i found: Karyosome is a dense area of chromatin in the nucleus, as it can be seen here in a iodamoeba buetschlii. In general it is recognised as a dark area inside the nucleus. Yet acording to the book "medizinische Mikrobiologie" (Ernst Wiesmann, Thieme 6. Auflage ISBN 3 13 444806 8) the Entamoeba histolytica species is not recognised by a prominant karyosome compared to e. g. iodamoeba buetschlii or endolimax nana. A similar much more simplified diagram for reference is here showing the same. It is therefore no need to include karysome appearance in this diagram. By the way today diagnosis of entamoeba species is done using Polymerase chain reaction and hardly with ultrastructural analysis because of the high failure rate relying on visual appearance.
Not promoted MER-C 06:51, 18 July 2008 (UTC)