Dmp1 primer,	5′-AGT GAG TCA TCA GAA GAA AGT CAA GC-3′ (forward) 5′-CTA TAC TGG CCT CTG TCG TAG CC-3′ (reverse);
Bsp primer,	5′-GAG ACG GCG ATA GTT CC-3′ (forward) 5′-AGT GCC GCT AAC TCA A-3′ (reverse);
Ocn primer,	5′-CTC TGT CTC TCT GAC CTC ACA G-3′ (forward) 5′-GGA GCT GCT GTG ACA TCC ATA C-3′ (reverse);
β-catenin primer,	5′-TGC CAC CAC CAC AGC TCC TT-3′ (forward) 5′-GGA ACA TGG CAG CTC GGA CCC-3′ (reverse);
GAPDH primer,	5′-GGT GTG AAC CAC GAG AAA-3′ (forward) 5′-TGA AGT CGC AGG AGA CAA-3′ (reverse).