In addition, levels of Lsf transcript expression in normal murine tissues (lanes 3-16 in Figure 1E) and other murine melanoma cells including B16 cells and Mel-ret cells (lanes 3-7 in Figure 1F) were lower than those in benign melanocytic tumors and melanoma from RET-mice (lane 2 in Figure 1E and 1F), whereas Lsf has been reported to be ubiquitously expressed in normal mouse tissues [10]. The gene discussed is RET; the disease is melanoma.