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ALP activity of MC3T3-E1 cells during a 3-week culture with various treatments. Results were divided by the DNA content measured for each group separately. Mean ± SE (n = 6 for ALP, n = 6 for DNA content). (* indicates statistical local significance compared with PC1 (osteogenic media) for PC2, C1, and C2, ns indicates local nonsignificance between groups). Color images available online at www.liebertpub.com/tec
