Inducible eukaryotic expression vectors

[Daniel Chagnovich]

Hello,

	I am writing to find out if anyone has used a eukaryotic expression
vector which can be induced with IPTG or tet (such as the LacSwithch from
Stratagene)? If so, which system did you use and how did it work out? Is the 
regulation in the non-induced state tight, ie 10-20 copies/cell as Stratagene
claims?
	Currently I am thinking about using the LacSwitch System from
Stratagene (as you may have noticed from my questions), but am willing to 
explore other options. Any help/ comments would be greatly appreciated.
	Thanks in advance.

Danny Chagnovich
dchagno at merle.ancs.nwu.edu