Fig. 2

Neutrophils in precancer lesions and VSCC tumours. Examples of immunohistochemical CD66b staining performed on tissue sections of VSCC tumours; images taken at × 20 A and × 40 B magnifications. The percentage of CD66b + neutrophils (C), in samples of vulvar precancer (HSIL, n = 7; dVIN, n = 1), d-fVSCC (n = 39), progVSCC (n = 29) and vulvar recurrence (n = 4). Survival curve (time to progression) according to the proportion of CD66b + neutrophils (D) in primary VSCC tumours (n = 67). PFS progression-free survival; < 95% and ≥ 95%, proportions of CD66b + neutrophils