Hello Is puromycin a better selectable marker than neomycin ? ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: : Gregers J. Gram, cand. scient. : Lab. Infect. Dis. 144 : Hvidovre Hospital : Denmark : EMAIL: Gregers.Gram at inet.uni-c.dk : WWW: http://inet.uni-c.dk/~mamocell/gg/ ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::