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Viability of S. pseudintermedius DK729 following treatment with 16X MIC of nisin A and nisin I4V peptides and untreated control for 24 hrs as evaluated by the XTT (2,3-bis[2-methyloxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide) assay measured using a microtiter plate reader. Asterisks indicate statistically significant differences (Student’s t-test) between peptides used at similar concentration (* = p < 0.05).
