Immunological, genotoxic, cholinesterasic and peroxisomal biomarkers in mussels exposed to various microplastics treatments: CNTR ¼ control; PE ¼ virgin polyethylene;
PS ¼ virgin polystyrene; PE-PYR ¼ pyrene-contaminated polyethylene; PS-PYR ¼ pyrene-contaminated polystyrene. Ach-E: acetylcholinesterase; AOX: Acyl CoA Oxidase. Data are
expressed as mean values ± standard deviation, or standard error of mean for % of DNA in tail, n ¼ 5; different letters indicate significant differences between groups of means (posthoc
comparison)