pEF1-V5-His B

All pEF or pUB vectors contain a strong promoter for high-level expression in mammalian cells,
a choice of selection marker for generating stable cell lines, and an epitope tag for easy 
detection with a monoclonal antibody and rapid purification on nickel-chelating resin. Each vector 
is available in three reading frames to simplify cloning in-frame with the fusion tag.