Fig. 1From: Assessing the phytotoxicity of cetrimonium bromide in plants using eco-physiological parametersRoot elongation of a Lactuca sativa and b Brassica campestris after cetrimonium bromide treatment. Symbols and error bars represent the mean ± SE of 20 replicates. Symbols with the same letters are not significantly different (p > 0.05)Back to article page