Anti-aging effect and mechanism of concentrated solution of aqueous extract form Penthorum chinense Effects of triptolide on cell cycle and expression of P21wap1/cip1 and P27kip1 in human multiple myeloma RPMI 8226 cells Effects of ginsenoside Rh2(GS-Rh2) on cell cycle of Eca-109 esophageal carcinoma cell line Effect of Bushen Yiqi Hexue recipe on endometrial P21 expression of embryo implantation dysfunctional mice Effect of Glycyrrhizae Radix et Rhizoma combined with Atractylodis Macrocephalae Rhizoma on p53 and p21 gene expression of IEC-6 cells HL-60 cell differentiation induced by bufalin and its relative gene expression Inhibitory effect of KANGXIANLING containing serum on ex-vivo proliferation of human hepato carcinoma cell HepG_2 Effects of cryptotanshinone on proliferation and apoptosis of Helacell line of cervical cancer