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Description:This illustration of a composite photomicrograph reveals the ultrastructural details seen in two stages of the life cycle of the parasite Entamoeba histolytica, the cystic stage (lt), stained with iodine, and the Giemsa-stained vegetative, trophozoite stage (cntr and rt).
At left, you’ll see an E. histolytica cyst containing a chromatoid body, and the characteristic four nuclei, each containing a single, centrally-located karyosome. In the center, and at right, there are two E. histolytica trophozoites, otherwise known as the vegetative stage of the life cycle. Within each trophozoite, you can see a single nucleus, which contains a single, centrally-located karyosome, and peripherally-located chromatin. Note the ingested red blood cells inside each of the trophozoites.
High Resolution: Click here for hi-resolution image (16.83 MB)
Content Providers(s):CDC
Creation Date:1979
Photo Credit:
Links:CDC – Div. of Parasitic Diseases; Amebiasis
CDC Organization
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Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.