Fig. 2

Neutralization of the lesion-inducing potential of C. perfringens. The graph represents the percentage of ligated intestinal loops in which necrotic lesions were present after 5 h of incubation with sterile culture medium (n = 20), C. perfringens alone (untreated, n = 20) or C. perfringens in combination with naive sera (pre-immune serum, n = 60), antiserum to C. perfringens toxins (native toxins, n = 20), formaldehyde inactivated, L-lysine protected C. perfringens toxins (L-lysine/formaldehyde, n = 20) and commercial formaldehyde inactivated multivalent clostridial vaccine (commercial formaldehyde, n = 20). ** 0.001 ≤ p < 0.01 or *** p < 0.001