Dear all, I'm looking for prokaryotic expression vectors carrying a C-terminal His tag, like pQE60 or 70, which are no longer produced by Qiagen (from what I was told on the phone). Does anybody have a small aliquot left, or a similar plasmid? Thanks! Alain Dr Alain Kohl Division of Virology University of Glasgow Church Street Glasgow G11 5 JR Scotland, UK ---