Awakening the sleeping/cancer-protecting angels in mutant p53-expressing human tumors: Emodin, isolated from Rhubarb and others,  increases the expression of tumor suppressors genes, such as PTEN, PDCD4, TA-p73, TAp63, p53, and others, induces regression of p53-mutated human tumors, via down regulation of its target gene, 6/July/2018, 10.45 am