Objective. To determine the microenvironmental conditions of the IVD that are critical for MSC-based tissue repair and to determine whether MSCs from different age groups respond differently.

• 目的：测定椎间盘的微环境，它是基于干细胞而成的组织进行修复的要害，同时测定是否来自不同年龄组的干细胞具有不同的反应能力。