You have isolated a strain of E. coli which is resistant to…
You have isolated a strain of E. coli which is resistant to Penicillin and Tetracycline antibiotics. When you mix this strain of E.coli with Staphylococcus aureus (which is sensitive to both antibiotics), you notice that the Staphylococcus becomes resistant to Penicillin and Tetracycline. Which of the following can explain this phenomenon?
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