FIG. 6.

Epsilon-toxin peptide array. A peptide array consisting of 124 overlapping 12-amino-acid-long peptides corresponding to epsilon-toxin was probed with negative control antibody (Ab), with anti-epsilon-toxin antibody 4D7, or with anti-epsilon-toxin antibody 5B7. The arrow highlights a peptide uniquely recognized by anti-epsilon-toxin antibody 4D7. Two additional spots (in the lower left of the array) are recognized by all three antibody preparations, though the signal when probed with the negative control antibody is much weaker than that when probed with either neutralizing monoclonal antibody.