p pdgf
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The contents of PDGF-BB were obviously higher than those of control group (all P<0.05), and they gradually reduced with time.
而PDGF-BB含量也明显高于对照组（P均＜0．05），但随术后时间延长逐渐恢复降低。
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