Summary
The incorporation of tritiated thymidine into germinative cells in plerocercoids of Diphyllobothrium dendriticum was studied by autoradiography.
Thymidine was found to enter very rapidly into the plerocercoids. After as little as 5 minutes' incubation the germinative cells had acquired label.
The durations of the different parts of interphase were determined by pulse labelling. The mean length of one mitotic cycle was calculated as about 19 hours. The length of the various parts of interphase were approximately: G 1 6 hours, S 10 hours and G 2 3 hours.
The number of actively dividing cells in the inner parenchyma was determined by prolonged labelling. 39 per cent of the cell population enters into the synthetic phase. This value indicates the size of the germinative cell population.
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Wikgren, BJ.P., Gustafsson, M.K.S. Duration of the cell cycle of germinative cells in plerocercoids of Diphyllobothrium dendriticum . Z. F. Parasitenkunde 29, 275–281 (1967). https://doi.org/10.1007/BF00260183
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DOI: https://doi.org/10.1007/BF00260183