Effects of passive immunization on decidual leukocytes and vascularization. Representative IHC for CD56 (B and D), CD68 (C and E), DC-SIGN (F and G), and CD3 (H and I) expression in the decidua are shown. Nonspecific treated (B, C, F, H, and J), and 25D3-treated (D, E, G, and I) tissues are shown. A, Quantitation of the indicated cell populations in five fields from each of four implantation sites per group. *, p < 0.01, indicating 25D3-treated groups that are significantly different from untreated or nonspecific treated animals. J, Representative IDO IHC for decidual vessels. K, Quantitation of the number of decidual vessels from five random fields of four animals per group.