Structural Changes in Tetrahymena rostrata during Induced Encystment* |
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Authors: | EUGENE W McARDLE BARTON L BERGQUIST CHARLES F EHRET |
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Abstract: | SYNOPSIS. Experimentally induced precystic stages and mature cysts from 3 clones of Tetrahymena rostrata were examined by light and electron microscopy. It was demonstrated by cytochemical staining and fine-structural observations that precystic stages release mucocyst material that provides for the production of a cyst wall. Early and late cysts also contain numerous autophagous vacuoles. In late cysts there is a replacement of depleted mucocyst organelles. The developmental evidence obtained from sampling of sequential developmental stages suggests an ~24-h timetable of cytoplasmic events associated with encystment in this organism. |
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Keywords: | Tetrahymena rostrata encystment process mucocysts autophagous vacuoles cyst wall cytochemistry light microscopy electron microscopy |
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