Fig. 5From: Cortical microtubule orientation in Arabidopsis thaliana root meristematic zone depends on cell division and requires severing by kataninTEM micrographs of cortex cells at tangential sections through the cortical cytoplasm. In the wild-type (a), transverse microtubules (arrowheads) uniformly parallel to each other can be observed. In fra2 (b) and lue1 (c), microtubules (arrowheads) follow a random pattern. The asterisks mark grazing sectioned parts of cortex cell walls. Scale bar 400 nmBack to article page