This is a stupa niche from the Sui Dynasty. 你看这是隋代的塔龛。
This work also establishes that direct interaction with osteolineage niche cells, in the absence of additional environmental inputs, is sufficient to modulate stem cell activity. 在没有额外的环境投入下这些研究还建立了成骨细胞系龛细胞的直接相互作用足以调节干细胞活性。
