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Phyzzle
Jan 26, 2008

Arglebargle III posted:

Being immune to chemicals that gently caress with basic stuff like your cell wall synthesis takes energy and resources that could be spent reproducing. Bacteria without immunity will outcompete immune bacteria in a benign environment.

aparmenideanmonad posted:

Yep, what's cool about drug resistant bacteria is that they will generally be outcompeted by non-drug resistant bacteria if they are in an environment that's not frequently exposed to low doses of antibiotics.

Does this mean that not using penicillin will eventually allow it to be effective again? What sort of time scale would it take?

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