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Growth and injury of Arabidopsis seedlings under UV-B exposure. Seedlings at 5 DAG were grown on one-half-strength MS agar medium and illuminated with full-wavelength light supplemented with UV-B light from an FS20-UVB lamp (0.2 J m−2 s−1) for 8 h, then left to recover for 2 d. WT, Wild type.
