RESULTS: ① Basic morphological characteristics of rat dental pulp stem cells: Like fibroblasts with spindle-like shape. Multangular or oval cells were observed in the areas where cells grew densely. 结果:①大鼠牙髓干细胞基本形态特征:为成纤维细胞样生长,细胞呈梭形,密集区细胞形态多样,可见多角形或椭圆形细胞密集排列。