Figure 3.

Production of chrysolaminarin in diatoms (a–e) at different CO₂ concentrations. All panels represent low CO₂ (L-CO₂; 400 ppm, dark grey bars) and high CO₂ (H-CO₂; 20,000 ppm, light grey and dashed bars) as in panel (a). Average and error bars (SD) are represented (n = 3). ** p ≤ 0.01, *** p ≤ 0.005, and ns, not significant.