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Tip growth in a tobacco pollen tube (germinated in vitro) | ![](/public/Final-Images/Fi_Final_001-050/Fi018_pollentubetipgrowth.gif) |
| | | Time-lapse images showing that pollen tubes grow only at the cell tip. Growth speed in vitro: about 1 - 4 micrometer per minute for Nicotiana tabacum. Cell diameter: 8 micrometer. Author: Aydn Haydar, under supervision of J. Derksen, J. Nieuwland and E. Pierson | |
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