Altered DC distribution in peripheral lymphoid and nonlymphoid organs after anti-CD3ɛ administration. Alkaline phosphatase staining of cryostat section of (A) hearts and (B) mesenteric lymph nodes (serial sections) from control and anti-CD3ɛ–injected mice (50 μg IV). Sections were stained with antibodies to MHC class II, CD4 and CD11c, as indicated in the figure. A higher magnification of MHC II⁺ cells in the heart of control mice is also shown.