Photoreactivation of excystment delay in Colpoda, induced by far ultraviolet radiation |
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| Authors: | A C Giese |
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| Institution: | 1. Department of Oral Biology, University of Connecticut Health Center, Farmington, Conn. 06032, USA;2. Division of Developmental Biology, American Dental Association Research Institute, Chicago, Ill. 60611, USA;3. Department of Biology, Brandeis University, Waltham, Mass. 02154, USA |
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| Abstract: | The surface of single cells of Dictyostelium discoideum during growth and aggregation has been observed by scanning electron microscopy (SEM). Our results show a series of morphological changes associated with the transition from growth to development which appear to be cellcontact dependent. In addition, from results using Concanavalin A as a biochemical probe, we conclude that the mannose-containing surface glycoproteins are accessible during growth, but become inaccessible during aggregation. |
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