the results showed that : 1 ) the maintenance of volumetric density of bone is dependent on the presence of 1,25 ( oh ) 2d3 , 2 ) lack of 1,25 ( oh ) 2d3 is associated with an increase in the number of osteocytes per unit volume of bone , most probably due to decreased amounts of bone formed by each osteoblast before becoming an osteocyte , 3 ) adequate quantities of either 24r,25 ( oh ) 2d3 or 1,25 ( oh ) 2d3 are needed to prevent accumulation of osteoid or the production of endosteal fibrosis , and 4 ) maintenance of normal tetracycline label width requires both hydroxylated compounds with one of them in sufficient amounts .
C0262950
bone
C0682561
osteoid