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Relationship between the appearance of RanGAP band and the developmental stage of PPB MTs in onion root tip cells. Data from 108 PPBs in an experiment are shown here. Width of the MT band in interphase (A), mid-prophase (B), and late prophase (C) cells. Closed boxes show cells with a RanGAP band and open boxes show cells without RanGAP bands.
