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1Texas Natural Science Center, 2400 Trinity Street, University of Texas, Austin TX 78619, U.S.A. 2Section of Integrative Biology, The University of Texas at Austin, 1 University Station (A6700), Austin, TX 78712, U.S.A. 3Plant Biology Graduate Program, The University of Texas at Austin, 1 University Station (A6700), Austin, TX 78712, U.S.A. 4Institute of Cellular and Molecular Biology, The University of Texas at Austin, 1 University Station (A6700), Austin, TX 78712, U.S.A. *Author for correspondence: etheriot@austin.utexas.edu
Theriot et al. (Tue,) studied this question.