pMXs-EF1-Puro vector product blog Tags: Vector; pMXs-EF1-Puro; pMXs-EF1-Puro vector; Posted by mybiosource_staff on . The pMXs-EF1-Puro n/a (Catalog #MBS169505) is a Vector and is intended for research purposes only. The product is available for immediate purchase.To buy or view more detailed product information and pricing, please click on the technical datasheet page below:pMXs-EF1-Puro Retroviral VectorUse this construct to clone your gene for downstream recombinant retroviral packaging.LMO Content: None.