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Localization of GFP:EXO70A2 expressed under its native promoter in pollen. A, GFP:EXO70A2 localization in unicellular, bicellular, tricellular, and mature pollen grains in the exo70a2 background. All images were captured at the same setting, allowing for relative quantitative comparison. B, GFP:EXO70A2 localization at different stages of pollen tube elongation in the exo70a2 background. C, GFP:EXO70A2 localization in a pollen tube in the wild-type (WT) background.
