pMXs is from Dr. Toshio Kitamura of the University of Tokyo, the Institute of Medical Science. If you use this plasmid in a paper, please cite: Retrovirus-mediated gene transfer and expression cloning: powerful tools in functional genomics. Exp Hematol. 2003 Nov;31(11):1007-14. Kitamura T, Koshino Y, Shibata F, Oki T, Nakajima H, Nosaka T, Kumagai H.
Please acknowledge the principal investigator and cite this article if you use
this plasmid in a publication. Also, please include the text "Addgene plasmid
17220" in your Materials and Methods section.