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Scanning electron microscopy of echinostoma revolutum trematoda during development in the chick embryo and domestic chick



Scanning electron microscopy of echinostoma revolutum trematoda during development in the chick embryo and domestic chick



International Journal for Parasitology 14(1): 75-82



Scanning electron microscopy (SEM) was used to study the development of chemically excysted metacercariae of E. revolutum on the chick chorioallantois. SEM studies were also made on preovigerous adults of E. revolutum grown in the domestic chick. During worm development on the chorioallantois the tegument changes from smooth to granular and sensory papillae on the suckers became well-defined. As worms developed on the chorioallantois the cephalic collar spines became thicker and more curved and the tegumentary spines showed marked changes in shape, size and distribution on both ventral and dorsal aspects of the body. Changes in the surface ultrastructure of worms grown on the chorioallantois were essentially similar to those observed in preovigerous worms from chicks.

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Accession: 006365533

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