Figure 4From: Genetic and functional characterization of the NanA sialidase from Clostridium chauvoeiSialidase neutralization spot test. The solid rings show the diffusion zone of the culture supernatant of C. chauvoei strain JF4135. The dotted rings show the diffusion zone of: left, anti-sialidase 40 kDa peptide serum; right, pre-immune serum from the same rabbit.Back to article page