The presence of gap junctions during early Patella embryogenesis: An electron microscopical study |
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| Authors: | AWC Dorresteijn SM Biliński JAM van den Biggelaar JG Bluemink |
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| Institution: | 1. Zoological Laboratory, State University of Utrecht, Padvalaan 8, 3508 TB Utrecht, The Netherlands;2. Hubrecht Laboratory, International Embryological Institute, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands |
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| Abstract: | The presence of gap junctions has been examined up to the sixth cleavage in the early Patella embryo. Gap junctions are located all over the blastomere borders. In 2-, 4-, and 8-cell embryos they were also observed at peripheral contacts. The frequency and size of the gap junctions increase at the 32-cell stage. The structure of gap junctions is similar in all stages investigated with hexagonally arranged equal-sized particles (11 nm) having a constant center-to-center spacing (13.0 nm). At the 32-cell stage formation plaques were observed, indicating an increase of gap junctions. |
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