Researchers have discovered that transplanting specially treated repair stem cells into damaged muscle makes them twice as big and strong and also stops them from ageing .
研究人员发现,为受损肌肉移植经过特殊处理的修复干细胞不仅能使肌肉更强大,而且能阻止其老化。
Some have questioned the ethics of transplanting the face of a dead person onto that of a living one , because a failed procedure would be painful and emotionally devastating .
Another intervention , though , allows entire bacterial ecosystems to be transferred from one gut to another . This is the transplanting of a small amount of faeces .