abnormal osteoblast differentiation enhanced osteoblast differentiation increased osteoblast differentiation MPheno.ontology 2012-05-18T11:56:40Z csmith increased ability or increased rate of production of skeletogenic cells that secrete osteoid, are capable of producing mineralized (hydroxyapatite) matrix, are located adjacent to or within osteoid tissue, and arise from the transformation of a preosteoblast cell MP:0011710