<b>Endosome labeling using concentrated and purified lentivirus.</b> HeLa cells were transduced using rLV.EF1.AcGFP1-Endo-9 (Cat. No 0018VCT) at an M.O.I of 80. The ready-made lentivirus encodes a fusion of RhoB GTPase and AcGFP1 which, when expressed, localizes to the surface of vesicles of the endocytic pathway.