Objective To observe the dynamic changes of plasma circulating DNA in burn patients and investigate its clinical significance.Methods According to clinical stages after burn,total 108 plasma samples were collected from 32 cases of burn patients(burn surface area > 30%) during post-burn days 1- 3,4- 7,8- 14,and 15- 21 respectively.They were subjected in March to July 2013,including 25 males and7 females at a mean age of 42.Twenty-five patients were thermal injuries,and 7 were chemical burns with a median tim...