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The influence of anti — Swine erysipelas serum preserved in 0.5% phenol on the antibiotic titre of crystal penicillin G dissolved in it was studied by the author. It was found that a decrease of the, titre to 50% of the initial concentration takes place for the solution in the anti — Swine erysipelas serum at the temp. 37° C after 5,5 days, at the temp. 18—20° C after 13 days, at the temp. 2—4° C...
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