Objective:To investigate the characteristics of PCNA expression in hypertrophic scars and chronic ulcers and its relation to the development of scar and ulcer formation.

• 目的:研究PCNA在增生性瘢痕和慢性溃疡中的表达特征,探讨其与增生性瘢痕和慢性溃疡发生的关系。