Cover illustration: The inset cover photograph by J.G. Dubrovsky and A. Saralegui shows an apical meristem and root cap of a live lateral root of Arabidopsis thaliana indicating its indeterminate growth pattern. The unstained root was observed under a microscope using differential interferential contrast and a 3-D image model of brightness distribution visualized with Zeiss LSM 510 Software. See Shishkova et al. (pp. 319-340).
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