Figure 1. Total oxidant status, total antioxidant capacity, and oxidative stress index in different groups. Values are presented as mean ± SD. *, P < 0.05, **, P < 0.01, P < 0.05; * and #, indicate comparisons with normal and benign groups. TOS, total oxidant status; TAC, total antioxidant capacity; OSI, oxidative stress index; PTC, papillary thyroid cancer; FTC, follicular thyroid cancer; MTC, medullary thyroid cancer; ATC, anaplastic thyroid cancer.
