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Science 12 May 2006:
Vol. 312. no. 5775, p. 809
DOI: 10.1126/science.312.5775.809h
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This Week in Science

The plant hormone auxin regulates a variety of growth and developmental responses and must be transported within the plant in an organized fashion. Petrášek et al. (p. 914, published online 6 April; see the Brevia by Wiśniewska et al. and the Perspective by Sieberer and Leyser) now show, by using inducible overexpression in plant cells and expression in human and yeast cells, that the protein PIN is responsible for the direction in which auxin flows out of the cell.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)