目的了解瘢痕疙瘩遗传学改变的特征。
Objective To identify the genetic alteration in human keloid.
DNA异常甲基化是肿瘤常见的表观遗传学改变。
Aberrant methylation of DNA has been recognized as common epigenetic changes in human cancer.
在这些发生了表观遗传学改变的基因中，有一些可以影响食欲控制等行为。
Among the genes that are epigenetically altered are those that affect such behaviors as appetite control.
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