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Cover: Activity of the CYCD3;1 cell cycle gene promoter in a cross section of an Arabidopsis root undergoing secondary growth. Expression is shown in tissues capable of undergoing further cell proliferation and thereby contributing to secondary thickening, consistent with a role for this gene in promoting this agronomically important developmental process. See the article by Randall et al. on page 1229. Image credit: Ricardo S. Randall.
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RESEARCH ARTICLES
AINTEGUMENTA and the D-type cyclin CYCD3;1 regulate root secondary growth and respond to cytokinins
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