- The combination arm will receive the pox viral vaccines that contain the transgenes for CEA and MUC-1 (both with modified HLA-A2 agonist epitopes) as well as 3 human T-cell costimulatory molecules, B7-1, ICAM-1, and LFA-3 [rV-PANVAC (vaccinia) and rFPANVAC (fowlpox)] as follows: