In comparisons of TagRFP-MON2 with EGFP-SNX3, the M1 of MCC was 0.069±0.009 and the M2 of MCC was 0.082±0.012 (n=19 for both, mean±SE), suggesting MON2 and SNX3 rarely co-localized (Fig. 2b and Supplemental Figure S3). The gene discussed is MON2; the disease is Merkel cell skin cancer.