Figure 2.

mAbs CP5–4C2 and CP8–5A6 were tested by colony immunoblot for reactivity with S. aureus type 5 and 8 reference strains or clinical isolates. The staphylococcal isolates are listed in Table 2. mAb 4C2 reacted with all 14 serotype 5 isolates, whereas mAb 5A6 reacted with 19 of 21 serotype 8 isolates. CoNS, coagulase-negative staphylococci; CP-, capsule negative. The immunoblot was performed three times, and a representative blot is shown.