Figure 3. Immunohistochemical labeling with the PrP-antibody BAR224 showed that the inoculated rPrP was present both in cells (A) and cell-free (B) in the submucosal lymphatics. (A) The rPrP was mainly in mononuclear cells (07/F103 30 min BAR224) but also in a few polymorphonuclear cells (A, inset. 09/F607 30 min BAR224). (B) The rPrP was present in cell-free material in submucosal lymphatics (07/F289 30 min BAR224). Scale bars, 10 µm.