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do bacteria have chromosomes ?
which hygiene step would best help prevent salmonella poisoning ?
does uv light kill e coli ?
does pneumonia vaccine protect against viral or bacterial pneumonia ?
how are bacteriophage and e coli alike ?
does gargling salt water kill bacteria ?
how big is e coli bacteria ?
does heat kill bacteria in the air ?
does peroxide kill bacteria on skin ?
does neosporin kill bacteria ?