Nourishing Yin and moistening dryness formula inhibits colon cell apoptosis via activating the PI3K/AKT signaling pathway to ameliorate Yin-deficiency constipation in mice oleh Hanyu Zhang, Fengyin Diao, Xuejin Fan, Shining Ge, Xu Han, Luge Wei, Qingsheng Yin, Pengwei Zhuang, Mixia Zhang, Yanjun Zhang