Immunoblot of M. catarrhalis strains reacted with anti-rLbpA and anti-LbpB antibodies. (A) Whole-cell lysates probed with anti-Q8 rLbpA plus anti-Q8 rLbpB antisera. All cells were grown in the presence of EDDA. (B) Whole-cell lysates probed with anti-Q8 rLbpA antibody. (C) Whole-cell lysates probed with anti-Q8 rLbpB antibody. Lane 1, strain Q8; lane 2, strain 4223; lane 3, strain VH19; lane 4, strain LES-1; lane 5, strain H-04; lane 6, strain 3. +, with EDDA; −, without EDDA.