Figure 2

Blood neutrophils secrete constitutively APRIL. (a) Polymorphonuclear cells (PMN) and peripheral blood monoculear cells (PBMC) were embedded into mouse intestine and stained with Stalk-1 and Aprily-2. (b) Levels of A proliferation-inducing ligand (APRIL) in serum were determined with an ELISA KIT for human APRIL in healthy donors (Hu). To assess the specificity of the detection, mouse xenogeneic sera were tested as negative control (Mu).