Host metabolites that phenotypically increase the resistance of Haemophilus influenzae type b to clearance mechanisms.

Abstract excerpt

Unidentified low-molecular-weight factor(s) in serum or nasopharyngeal secretions were known to phenotypically increase the resistance of Haemophilus influenzae type b (Hib) to bactericidal and opsonic antibodies, and resistance was attributed to two hypothetical mechanisms. Serum components generating resistance were studied. Mechanism 1, present in some Hib strains and their capsule-deficient mutants and...

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