Vesicles Accumulating Auxin in Vitro Are Not “Presynaptic”

Dear Editor, I was astonished to read how Baluska and colleagues et al. (see [Robinson et al., 2018][1]) interpret the plant membrane vesicles we characterized 3 decades ago ([Hertel et al., 1983][2]; [Hertel, 1987][3]). These vesicles were extracted from zucchini hypocotyls and maize coleoptiles,