This report is related to the research article entitled "B cell phenotypes in baboons with pig artery patch grafts receiving conventional immunosuppressive therapy" (Yamamoto et al., in press). Herein we provide the data regarding pig artery patch xenotransplantation into the baboon׳s aorta, trough levels of tacrolimus and rapamycin in the blood after transplantation, analysis of B cell phenotype on the basis of IgD and CD27 expression in the blood, and analysis of T cell phenotype on the basis of CD28 and CD95 expression in the blood.