Fig. 5
The relative level of caspase 9 activation following incubation with copper-containing compounds at a concentration of 50 mg Cu L−1 including Cu NPs, CuO NPs, and CuSO4, was determined as a fold-change compared to the control. Different superscripts indicate a significant difference among experimental groups at a given incubation time. Median and interquartile range (n = 21, Kruskal-Wallis test, p < .05).
