Fig. 3From: An optimized protocol for the preparation of oxygen-evolving thylakoid membranes from Cyclotella meneghiniana provides a tool for the investigation of diatom plastidic electron transportAbsorption and second derivative spectra of intact cells and isolated thylakoid membranes of C. meneghiniana. The Chl concentration for the absorption measurements was 2 μg mL−1. For further measurement details see the Methods section. Figure. 3 shows representative spectraBack to article page