FKN expression in the duodenum.

FKN expression was tested in the duodenum of 3 HIV-uninfected (A) or 2 HIV-infected (B) patients by immunohistochemistry (data not shown) or by in situ hybridization with an antisense probe. (C) CD79α-expressing cells in the duodenum of HIV-infected patients. Original magnification × 200 in panels A and C and × 400 in panel B and in the insert of panel C. L indicates digestive lumen.