Methods: Bone marrow-derived stem cells of a five-month-old New Zealand White rabbit were isolated with a density gradient and culture-expanded in DMEM supplemented with 15% FBS at 37 , 5%CO2 atmosphere incubator.

• 方法：密度梯度离心法获得5月龄兔骨髓来源间充质干细胞，37℃，5%25CO_2孵箱培养。