Withdrawal: Cyclin L2, a novel RNA polymerase II-associated cyclin, is involved in pre-mRNA splicing and induces apoptosis of human hepatocellular carcinoma cells

撤回：细胞周期蛋白L2是一种新型的RNA聚合酶II相关细胞周期蛋白，参与前体mRNA剪接并诱导人肝细胞癌细胞凋亡。