Fig. 7

Chronic effects (96 h) on growth of C. elegans for the negative control (white), the eluates of three concentrations (0.5, 5 and 50 mg/L) of each of the three test materials (blue colors) and the positive control (BAC-C16; violet colors) as boxplots. Boxes depict the lower and upper quartile as well as the median; whiskers show the standard deviation of mean of n > 10 replicates and dots represent outliers. Effects were calculated in comparison to the mean growth in the negative control and positive effect values show nematode growth stimulation, while negative values show growth inhibition. Asterisks denote significant differences between the treatments and the negative control (Dunn’s test: *: p < 0.05, **: p < 0.01, ***: p < 0.001)