Fig. 5From: Characterization of poplar growth-regulating factors and analysis of their function in leaf size controlThe relative expression of CYCB1;1 and EXP11 in leaves of mGRF6b (a), mGRF7a (b), mGRF12a (c), and GRF12b (d) overexpression (OE) transgenic plants. CYCB1;1a and CYCB1;1b are the homologs of cell proliferation marker genes in Arabidopsis, and EXP11a and EXP11b are the homologs of cell expansion marker genes in Arabidopsis. Actin was used as the internal control. Data was presented as means ± SD (n = 4–8). *P < 0.05, **P < 0.01 determined by Student’s t-testBack to article page