Fig. 2From: Polystyrene nanoplastic and engine oil synergistically intensify toxicity in Nile tilapia, Oreochromis niloticusOxidative stress parameters of Nile tilapia exposed to PS-NPs and / or EO for 15 days. (a) Total antioxidant capacity (TAC), (b) Reduced glutathione (GSH), and (c) Malondialdehyde (MDA). Data are presented as mean ± standard error (n = 6). Bars on the graph with different lowercase letters indicate significant difference between groups (P < 0.05)Back to article page