could you use radioactivity to make bacteria stronger and attack pathogens ?

Question: could you use radioactivity to make bacteria stronger and attack pathogens ?
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  bacteria
  
  pathogen
  
  radioactivity
Asked by Ghbarreiros to Daniela ?, ☣ Danna, Jonny, Juan on 22 Jun 2016.
- Danna Gifford answered on 22 Jun 2016:
  
  Yes in a way–radiation can cause mutations in DNA, which can make bacteria stronger sometimes. But it could also make them weaker, as mutations are random. But the bacteria in our body that fight pathogens are already pretty good at their job, so I’m not sure we could easily make them better.
- Jonathan Hunter answered on 22 Jun 2016:
  
  Also, if you made bacteria radioactive then that radioactivity might poison you, as well as the pathogen!

Question: could you use radioactivity to make bacteria stronger and attack pathogens ?