These are chemical messengers that cause inflammation, most often to fight infection or repairinjury.
这些化学信号分子引起炎症，其中多数因子具有抗感染或损伤修复的作用。
2
These attributes are genetically programmed functions of normal cells that are intended to combat infection or repairinjury.
这些属性是正常细胞的基因编程功能，此举的目的是抗击感染或修复损伤。
3
As a footballer, if you're prone to injury it can mean the end of your career, so having your stem cells - a repair kit if you like - on hand makes sense.