Assertion: periosteum's layer | /r/MadeOf | cell
Facets:
Source sentences:
text: This layer contains cells, called progenitor cells, that can change into osteoblasts, which are cells responsible for the growth and formation of the bone.
text: The inner layer is the osteogenic layer and contains cells responsible for making new bone, osteoblasts, which are make new bone cells, and osteoclasts which break up and destroy bone.