新生胎儿骨的骨陷窝周可见成骨细胞排列，这些细胞在钙化的软骨化骨周围沉积成骨。
正常胎儿骨：生长骨板 成骨细胞
Osteoblasts can be seen lining the lacunae in the newly developing fetal bone, and they deposit bone along calcified cartilagenous spicules.
