PRDM1 is a tumor suppressor gene in vivo. (A) Percentage of GFP-positive cells in tumors explanted from mice infected with empty vector (pWPI) or with vector for BLIMP1 reexpression (pWPI-HA-BLIMP1). (B) Protein levels of BLIMP1 and GFP in tumors explanted from mice at day 20. A vertical line has been inserted to indicate a repositioned gel lane. (C) Xenograft growth curves of infected cells in NSG mice.