anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure development cellular developmental process ossification anatomical structure developmentanatomical structure development cellular developmental processcellular developmental process ossificationossification protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein binding protein bindingprotein binding cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cell organelle membrane-enclosed lumen cellcell organelleorganelle membrane-enclosed lumenmembrane-enclosed lumen