Titration of bactericidal activity against smooth and rough strains of Salmonella which are resistant in isotonic medium.


Bactericidal factors in antisera against various chemotype strains of Salmonella were assayed by means of the spot method. Certain smooth and rough strains were resistant to the killing effect of immune mouse sera when the activity was assayed in an isotonic salt medium and guinea pig complement was used. However, the sensitivity was found to be increased… (More)


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