Figure 3: Relative amounts of acid soluble collagen of fibroblast culture supernatants and fibroblasts after incubation with 100 mM L-ascorbic acid as positive control and polysaccharide fractions (10 μg/mL). Results were indirectly calculated by determination of hydroxyproline with Direct Red 80. Values shown are normalized to collagen amounts in supernatants and cells of untreated control (—: untreated control = 100%). * compared to untreated cells; . Error bars = SE.