Figure 4

Linear regression plot and polynomial plot. Mean collagen production (µg) in each group is plotted against mean cell survival (%) in each group. Linear fit: y = 0.00018 + 0.25; Polynomial fit: y = 8 × 10−9x2 – 6 × 10−5x + 1.4232.

Linear regression plot and polynomial plot. Mean collagen production (µg) in each group is plotted against mean cell survival (%) in each group. Linear fit: y = 0.00018 + 0.25; Polynomial fit: y = 8 × 10−9x2 – 6 × 10−5x + 1.4232.