Figure 6. CXCR5 expression intrinsically connects with the level of Schwann cell markers in SACC specimens. (A) Immunohistochemical staining of Schwann cell markers, including S100A4, p75NTR and GFAP in normal salivary gland (NSG), SACC without PNI (No-PNI), far away nerve of SACC with PNI (Far-nerve), nerve invasion front of SACC with PNI (Nerve-front). ‘N’ represented nerve, (Bar: 20 μm). (B) Correlation of CXCR5 with Schwann cell markers at nerve invasion frontier of SACC patients. CXCR5 expression was positively correlated with the expression of S100A4, p75NTR and GFAP at nerve invasion frontier of SACC (**p < 0.01).