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PIN1 and IAA colocalization in control and BFA-treated root apices. (A) In untreated roots, colocalization of PIN1 with IAA in distinct patches at the end-poles is obvious. (B and C) After 2 h of BFA exposure, PIN1, IAA, and JIM5-positive cell wall pectins colocalize in patch-like structures within endocytic BFA-induced compartments. Bars: 10 µM.
