Fig. 4. Nuclear morphology was evaluated using 4,6-diamidino-2-phenylindole (DAPI) staining after exposure to 0 (A), 200 (B), 400 (C), 600 (D), 800 (E) mg L^–1 terpinolene and 3 mM arsenic(iii) (F) solutions. Arsenic(iii) was used as a positive control. Arrows: Degraded and fragmented DNA. Images were taken using a fluorescent microscope from at least three independent biological replica (n = 3).