in the secondary spongiosa ( lower metaphysis ) of rats treated with 2 same dose levels ( 1 ) an increase in bone mass , calcified cartilage cores , and hard tissue mass and perimeter , an elevation of osteoprogenitor cell and osteoblast numbers , a depression of osteoclast , osteoclast nuclei numbers and surface to volume ratio and new sites of intramembranous ossification ( woven bone formation ) originating from the cortico-endosteal envelope was observed .
C0007634
cell
C0007610
nuclei