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Inhibition halos presented by Psidium guajava aqueous extract in the concentration range of 2.3 to 11.4 mg/mL (1–5) and blank (B) against the different strains: (A) Staphylococcus aureus (resistant); (B) Staphylococcus aureus (wild-type); (C) Staphylococcus pseudintermedius (resistant); (D) Staphylococcus pseudintermedius (wild-type); (E) Escherichia coli (wild-type); (F) Escherichia coli (resistant); (G) Streptococcus beta-hemolytic (wild-type).
