Co-immunoprecipitation (Co-IP) showing interaction between native CagI and CagH in <i>H. pylori</i>(Hp).

<p>(<b>A</b>) Western blots showing Co-IP of CagH and CagL by anti-CagI and Co-IP of CagI and CagL by anti-CagH antibody from <i>H. pylori</i> cell extract. (<b>B</b>) SDS-PAGE showing co-expression of MBP-tagged CagH and without tag CagI. (<b>C</b> and <b>D</b>) Western blots showing Co-IP of recombinant CagI (without tag) and MBP-CagH by anti-CagH and anti-CagI antibodies respectively. Antibodies used in Western blots are indicated.