图 4.
Gross observation of two groups after operation
术后两组皮瓣大体观察
左侧为 PBS 组，右侧为 ADSC-Exos 组 a. 术后第 3 天；b. 术后第 7 天
Left for the PBS group and right for the ADSC-Exos group a. On the 3rd day after operation; b. On the 7th day after operation
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