Thrombus weight in control and tumor-bearing mice. Venous thrombosis was induced in control and PANC-1 tumor-bearing mice by ligation of IVC. Thrombi were harvested 2 days (A, n = 6 and 5) or 8 days (B, n = 6 and 6) after IVC stasis and weighed. Mice with tumors between 2.1 and 2.9 g were used. Data are shown as mean ± standard deviation. Data were analyzed with either the Welch t test (A) or the unpaired, 2-tailed Student t test (B) depending on the variances (*P < .05).