Expression of CD70 and CD27 in immune cells. (A) Microarray analysis showing expression of CD70 and CD27 in immune cells. (B) The expression of CD70 on resting pDCs or pDCs stimulated with CpG-B for 12, 24, 48, or 72 hours was analyzed by flow cytometry. (C) The expression of CD70 on pDCs stimulated with IL-3, CpG-A, CpG-B, flu, or HSV for 48 hours was analyzed by flow cytometry. (D) The expression of CD27 on resting B cells and B cells cultured for 12, 24, 48, or 72 hours with CD40L with or without IL2 and IL-10 was analyzed by flow cytometry. Shaded histogram represents isotype control; open histogram, specific staining.