Fig. 3From: Roles and mechanisms of leptin in osteogenic stimulation in cervical ossification of the posterior longitudinal ligamentEffects of leptin on osteocalcin and ALP mRNA expressions and activity in OPLL cells. a ALP mRNA expression. b OCN mRNA expression. c ALP activity measurement. *p < 0.05; **p < 0.001; ***p < 0.0001Back to article page