changing of cells through passages

Olav Vestrheim mblov at
Wed Feb 28 11:52:45 EST 1996

I wonder if anyone out there know some references on changing of 
transfection efficiency of cells (preferentially 293-HEK cells) through 
I have experienced a decrease in transfection efficiency.

Your sincerely:
Gunnar Thuestad
gunnar.thuestad at

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