Which of these antibiotics is/are obtained from bacteria?

Penicillin

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Erythromycin

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Polio vaccine

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All of the above

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Solution

The correct option is B Erythromycin
Penicillin is a secondary metabolite of certain species of Penicillium and is produced when the growth of the fungus is inhibited by stress.
Erythromycin is a bacteriostatic antibiotic macrolide produced by Streptomyces erythreus.
Polio vaccine contains killed virus and is given by injection. It is given to prevent polio, an infectious disease of the nervous system.
So, the correct option is 'Erythromycin'.

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