Tcf localization in IEM101. OMAP preparations from B. pertussis 18323 (from approximately 2 × 108 CFU), outer membrane protein fractions from IEM101 (from approximately 109 CFU), and trichloroacetic acid-precipitated culture supernatant (corresponding to 1 ml) were loaded on SDS-polyacrylamide gels and probed with anti-Tcf antiserum. Samples shown are B. pertussis 18323 OMAP (lane a), B. pertussis 18323 culture supernatant (lane b), IEM101 outer membrane fraction (lane c), IEM101(pNIR-tcf) outer membrane fraction (lane d), and IEM101(pNIR-tcf) culture supernatant (lane e).