# Higher infiltration of CD3/CD4/CD8 cells in tumor tissues may be related to the production of WT1-specific CTLs following DC immunization, according to immunohistochemical studies. # This work is the first to describe the viability and safety of DC-based tumor-specific immunization for PDA as an adjuvant setting following surgical tumor excision, employing a combination of WT1 peptide and MUC1-DC. The gene discussed is CD4; the disease is Patent ductus arteriosus.