F). LIF-induced BAE cell growth inhibition was abolished by knockdown of STAT3. BAE cells with STAT3 knockdown were cultured with LIF (10 ng/ml, Sigma) and vehicle. Cell proliferation was analyzed after 3 days. Fluorescence reading for each vehicle group was set as 1, n=3. Data information: Bars and error bars represent mean±SD. All experiments were carried out in three independent studies. siNegative, negative control siRNA not targeting any known genes. Two-way ANOVA was used as statistical test. 