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Anther sections. (A) JIM 8 and (B) JIM 13 preferential label the intine wall and especially at the aperture, where the pollen tube will emerge (arrows). (C) With LM6, the entire intine wall is labelled as expected, but the pectin wall is thicker at the aperture (arrows). E = endothecium. Scale bars: (A) = 50 µm, (B) = 10 µm, (C) = 20 µm.
