Answer:
Examples of rod-shaped bacteria used for medical research include Escherichia coli (E. coli) and Salmonella enterica. E. coli is a Gram-negative bacteria commonly found in the environment, food, and intestines of humans and animals. It is used for research in areas such as genetics, biochemistry, and cell biology. Salmonella enterica is a Gram-negative bacteria that is capable of causing foodborne illness in humans. It is also used for research in areas such as genetics, biochemistry, and pathogenicity.
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