ID#: 24125
Caption:
This illustration highlights some of the ultrastructural morphology exhibited by a Diphyllobothrium latus, formerly referred to as D. latum, ovum on the left, and a Taenia spp. ovum on the right. D. latus eggs are oval, or ellipsoidal, and range in size from 55 - 75µm by 40 - 50µm. There is an operculum at one end that can be inconspicuous, and at the opposite, abopercular end, is a small knob that can be barely discernible. The eggs of Taenia spp. are indistinguishable from each other, as well as from other members of the Taeniidae family of tapeworms. The eggs measure 30 - 35µm in diameter, and are radially-striated. The internal oncosphere contains six refractile hooks.
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Content Provider(s): CDC/ Fleisher
Creation Date: 1963
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Copyright Restrictions: None - This image is in the public domain and thus free of any copyright restrictions.