First step towards regeneration

Animal like newts and Zebra fish can regenerate limbs, fins, even part of the heart. But human have very little regenerative capacity, probably because of an evolutionary trade-off : suppressing cell growth reduced the risk of cancer, enabling human to live longer. A person can renew his liver to same extent, and regrow a fingertip while very young, but not mach more. In a new approach , a research group at staindford University has taken a inactivating two genes that work to suppress tumours , they got mouse muscle cell to revert to a younger state , start dividing and help repair tissue. what is true of mice is often true of humans , and although scientists are a long way from being able to cause limbs to regenerate, the research is attracting attention