In the submucosa of the OLP group, 201.7 CD20+ B cells/mm2 (median number, range, 24.5–1556.1) were present, while the corresponding number for CD20+ B cells in the submucosa of the LPL group was 26.8 cells/mm2 (range, 1.1–802.5, p=0.0020; Figure 4(b)). This evidence concerns the gene LPL and oral lichen planus.