Hepatic cellular infiltrates are composed predominantly of T lymphocytes and dendritic cells. Sections from FL-overexpressing animals at 6 weeks posttransplantation were stained immunohistochemically with antibodies against CD3 (A), dendritic cell (NLDC145; B), and CD11c (C) antigens or with a negative isotype control (in this case, rabbit IgG; D), as described in Materials and Methods. Note that the cellular infiltrate is comprised largely of CD3⁺ or NLDC145⁺ cells and that most cells were CD11c⁺. All photomicrographs were captured with a 40× objective.