On 26 Jun 2001 06:09:55 -0700, ehugo at woodhudson.org (Eric Hugo) wrote: I have done some work with pEGFP-N1 from Clontech. EGFP is more stable than "native" GFP, it expresses in mammalian cells and it comes in N1, N2, N3 and C1, C2, C3 variants to make all possible fusion proteins. Leman