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. 2013 Dec 5;20(1):31–39. doi: 10.1007/s12298-013-0211-5

Fig. 5.

Fig. 5

Relative proline content (μg/ml) of S. nigrum and S. lycopersicum grown in vitro under metals stress. Error bars represent standard error. Means followed by the same letter are not statistically different at p ≤ 0.05