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Comparison of representative leaves sections of Mentha piperita (dark green) and Ocimum basilicum (light green) grown under different light treatments, respectively (A, B) HPS200, (C, D) HPS100, and (E, F) CoeLux®. Images were obtained by optical microscopy using 10 µm slices of the central part of the fully expanded younger leaf. The black bar represents a 100 µm reference.
