Legend: C - calcified cartilage matrix; K - newly formed bone; B - primitive bone marow; Ob - osteoblast; Oc - osteocyte; Ocl - osteoclast Legenda: C - kalcificirani hrskavični matriks; K - novonastala kost; B - primitivna koštana srž; Ob - osteoblast; Oc - osteocit; Ocl - osteoklast