Figure 1. Proliferation (A) and alkaline phosphatase (ALP) activity at days 4, 7, and 10 (B) and extracellular matrix mineralization at day 21 (C) of cultures from 1-month and 21-month rats grown on Ti discs. Data are presented as the mean±standard deviation (n=5). * indicates significant differences between cells from 1-month and 21-month rats within each time point (p≤0.05).
