ساري هشام مصطفى أبو راس
عضو جديد
المساهمات : 16
تاريخ التسجيل : 03/09/2008
العمر : 37
 | | موضوع: السؤال الثاني الذكي الخميس سبتمبر 04, 2008 11:04 pm | |
| How you can differentiate between E.histoliteca and E.poloski ? | |
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e.a.i.a.m
عضو ذهبي
المساهمات : 211
تاريخ التسجيل : 28/05/2008
| | موضوع: رد: السؤال الثاني الذكي السبت سبتمبر 06, 2008 1:29 pm | |
| السلام عليكم ورحمة الله وبركاته....
Characteristics |
E. histolytica |
E. polecki |
Trophozoites (size, nucleus, and movement) |
15-20 µm; 1 nucleus; actively motile cytoplasmic protrusions, quickly finger shaped pseudopodium |
15-20 µm; 1 nucleus; motility resembles E. coli (slow movement, short and blunt pseudopodium) |
Cysts (size, nucleus) |
12-15 µm; mature cyst has 4 nuclei, immature cyst has 1 or 2 nuclei |
10-15 µm; 1 nucleus, very rarely binucleate or quadrinucleate |
Appearance of trophozoites |
Stained trophozoites fine, uniform granules of peripheral chromatin, and small central karyosome in nucleus; ingested RBC |
Nucleus with minute central karyosome, with fine granules of peripheral chromatin, finely granular cytoplasm; ingested bacteria |
Appearance of cysts |
Uniform size in having both karyosome and peripheral chromatin, typical nuclear structure, chromatodial bars with squared or rounded ends |
Mononucleate; large central karyosome; inclusion masses, chromatoid bars with pointed or angular ends |
Pathogenicity |
Pathogen |
Nonpathogen |
المصدر:http://cmr.asm.org/cgi/content/full/16/4/713/T1تحياتي... | |
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