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Browsing 1998 Onderstepoort Journal of Veterinary Research, Volume 65, 1998 by Subject "Amino acid (AA)"
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Van der Walt, M.L.; Greeff, A.S.; Verwoerd, Daniel Wynand
(Published by the Agricultural Research Council, Onderstepoort Veterinary Institute, 1998)
A number of amino acid requiring auxotrophic strains of SalmonellaTyphimurium were produced by
chemical mutagenesis. One of them, strain 81, was cured of the virulence plasmid and attenuated
for mice. This strain had an ...