This technique, lectin-mediated PLA (L-PLA), revealed cytoplasmic and/or membranous localization of endogenous fucosylated HLA-DRB1 in melanoma cells (Fig. 6b) that is lost upon FUTi treatment (Fig. 6c), confirming l-fuc-stimulated cell surface localization of HLA-DRB1 (Fig. 4d,e and Extended Data Fig. 4b). The gene discussed is HLA-DRB1; the disease is melanoma.