Real-time polymerase chain reaction. The relative expressions of ALP, osteocalcin, osteopontin, runx2, and VEGF were increased in group C compared with groups A and B after 6 weeks. At 12 weeks, the relative expression of OC and runx2 was still increased compared with groups A and B, whereas VEGF expression decreased in group C after 12 weeks (from left to right: 6 weeks groups A–C, 12 weeks groups A–C). ALP, alkaline phophatase. Color images available online at www.liebertpub.com/tea