Serum Trx1 levels in the breast cancer group and other cancer groups (kidney cancer, lung cancer and colorectal cancer). Clinicopathological information for each patient was provided by the supplier. The individual mean value (n = 3) was depicted as a scatter plot. The median value of each group is depicted by horizontal lines, and the interquartile range is displayed by vertical lines extending to the up and down of the median. Abbreviations: BC, breast cancer; KC, kidney cancer; LC, lung cancer; CRC, colorectal cancer; NM, male normal control; NF, female normal control; NFM, female and male normal controls.