ITGAM and neoplasm: Splenocytes were isolated from tumor-free (TF; n = 8/group) and Panc.02 tumor-bearing animals at 30 (n = 2/group), 40 (n = 7/group), 50 (n = 9/group), and 60 (n = 5/group) days post-tumor implantation to characterize the time course and magnitude of the tumor-associated increase in the Gr-1+CD11b+ MDSC population.