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ABA-induced morphological changes of protonema cells in control and transgenic plants. The protonemata of control, W-2, and D2-1 plants were incubated in normal BCD medium or the medium containing 10 μm ABA for 7 d. A, Nontreated control protonemata. B, ABA-treated control protonemata. C, ABA-treated W-2 protonemata. D, ABA-treated D2-1 protonemata. Bars = 100 μ m. [See online article for color version of this figure.]
