competent cells

Sulakshana Mukherjee mukherji at
Tue Nov 6 01:07:40 EST 2001

Dear All,
I just want to know that how long could the competent cells be stored at
-70degC? I had prepared the competent cells (for electroshock
tranformation) just one month back.
Thanks for your input in advance.

 with best regards,


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