Fig. 2
From: Perioperative changes in cell-free DNA for patients undergoing surgery for colon cancer
Change in cfDNA alleles per mL in pre-and postoperative samples. cfDNA levels depicted as boxplot showing median, upper and lower quartiles. Whiskers extend into a max of 1.5 times the interquartile range. Observations outside this are displayed as outliers. Y-axis scaled as log10. p values were calculated with Wilcoxon signed-rank test. A Shows the difference between B2M levels in pre-and postoperative samples. B Shows the difference between PPIA levels in pre-and postoperative samples. cfDNA: cell-free DNA, PPIA: Peptidyl-Prolyl cis–trans Isomerase A, B2M: Beta-2-microglobulin