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In-line absorption spectra for Chl f and Chl d from five cyanobacterial strains grown in far-red light (FRL). (A) Absorption spectra of Chl f; (B) Absorption spectra of Chl d. Chls were extracted from cells of Synechococcus sp. PCC 7335 (7335), Chr. thermalis PCC 7203 (7203), Calothrix sp. PCC 7507 (7507), F. thermalis PCC 7521 (7521), and Chlorogloeopsis sp. PCC 9212 (9212), which had been grown in FRL.
