Figure 3. Oxygen evolution of cultured algae during an LD cycle (A) followed by 4 LL cycles under red, blue or green spectral light with a uniform light intensity of 50 µmol quanta m⁻² s⁻¹.

B) The same setup with a lower light intensity of 25 µmol quanta m⁻² s⁻¹ (Each time point N = 4).