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Photosynthetic parameters ( F v / F m , PSII , 1 qP and NPQ) were calculated as described by Net CO 2 uptake rates were determined at 200 mol photons m -2 s -1 according to 2 concentration of the air entering the leaf chamber and the leaf temperature were adjusted to 400 mol mol -1 and 20C, respectively

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Frequency and quantity used per session are associated with problematic cannabis use 35