Polyclonal antisera to either a synthetic OipA peptide or a recombinant OipA protein detected OipA expression in Helicobacter pylori and correlated with functional oipA status determined by PCR sequence (sensitivity and specificity of >94%). Immunoblotting is a simple and accurate method for detecting expression of the important virulence factor OipA.
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Kudo et al. (2004) studied this question.
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