Detection of the interaction of anti-
KC40 by immunofluorescence microscopy. The interaction was detected by (A, C, E, G) immunofluorescence microscopy and the C. jejuni cells (B, D, F, H) were visualised by bright field microscopy. A, B A nanobody specific for F4-fimbriated enterotoxigenic E. coli shows no binding with the C. jejuni cells. C, D; E, F and G, H The anti-Campylobacter nanobodies Nb22, Nb23 and Nb84 respectively, binds specifically with the C. jejuni cells.