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weird bacteria

Trond Erik Vee Aune trondaun at biotech.REMOVETHISBEFOREREPLYING.ntnu.no
Tue Mar 4 02:40:39 EST 2003

Anne Thomas wrote:

>>>What about subculturing the swarmer onto a plate with a stronger agar
>>>concentration? We used to use one (6% agar if I remember correctly)
> which
>>>would stop the swarmers.
>>Does this mean that swarming bacteria spreads through the agar and not
>>on top of it?
>>Trond Erik
> No, Proteus mirabilis, for example, grows as a discrete colony onstead of
> swarming.

I don't get this. Why would increasing the agar concentration help 
prevent swarming if they don't move through the agar?

Trond Erik

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