Cell type specificity of FucT-VII induction by Ras. The indicated cell lines were each infected with Ras-containing retroviruses, and HECA-452 staining was assessed after 3 days. Because there were different efficiencies of viral infection, only the GFP⁺ population is shown. Each of these cell lines exhibits robust HECA-452 staining after transfection with FucT-VII cDNA,¹⁴  but only JSB3 cells and parental Jurkat cells show FucT-VII induction by Ras.