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HPTLC chromatogram of L. schweinfurthii micropropagated leaves’ extract against ferulic acid standard captured at 366 nm. Tracks 1–8: ferulic acid, 400 µg ml−1 of volume 2–9 µL; Tracks 9–15: dry leaves’ extract of volume 2, 4, 6, 8, 10, 12, and 14 µL.
