GFP- Expression

[Kathleen Liu]

I have two quick GFP questions: I am trying to express a GFP-reporter 
construct in HeLa cells, and I am wondering (1) what is the halflife of 
GFP in a mammalian cell, and (2) how long does it take to get expression 
of GFP from the time of induction of the construct?

Thanks in advance! kathleen