Effect of IS on immune phenotypes in spleens and kidney allograft. Kidneys from BALB/c (CD45.1) were transplanted into B6 recipients (CD45.2) with immunosuppression (IS) (w/IS) or without IS (wo/IS) (n = 4-6/group). Cells isolated from spleens and renal grafts were analyzed by flow cytometry. Frequencies of recipients’ T cells (gated on CD45.2+CD3+ cells) and myeloid cells (gated on CD45.2+CD11b+ cells), including dendritic cells (DCs) (CD11c+MHCII+ DCs), Mac (CD11b+F4/80+ macrophages), Mono (CD11b+Ly6C+ monocytes), and Granu (Ly6G+ granulocytes) are calculated based on total number of live cells and normalized by tissue weight (mg). Data in bar graphs are expressed as mean value with SEM. (*P ≤.05 or **P <.01, wo/IS vs w/IS). A, Representative dot-plot demonstrating percentages of recipients’ T cells and myeloid cells and absolute number of subtypes in spleens at POD2. B, Representative dot-plot demonstrating percentages of recipients (CD45.2+) vs donor cells (CD45.1+) and their absolute numbers in the kidney allografts at POD2. C, Representative dot-plot demonstrating percentages of recipients’ T cells and myeloid cells and absolute number of subtypes (above mentioned) in the kidney allografts at POD2