Article
Stable Listeria monocytogenes live vaccine candidate strains with graded attenuation on the mouse model.
Vaccine - 1 Feb 1991
Linde K, Abraham A A, Beer J
Abstract excerpt
Metabolic drift (antibiotics resistance) mutations were used to construct stable two (and three) marker vaccine candidate strains of the predominant Listeria monocytogenes serotypes 1/2a and 4b by stepwise selection. Derived from wild-type strains, spontaneous chromosomal streptomycin-resistant clones with their i.p. LD50 elevated from less than or equal to 10(5.0) c.f.u. to approximately 10(6.1) c.f.u. were used...
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