Figure 4From: Tumour necrosis factor-alpha expression in tumour islets confers a survival advantage in non-small cell lung cancer Kaplan-Meier five year survival curve for TNFα densities in the tumour islets (A) and stroma (B) divided into high counts (upper tertile), midrange counts (middle tertile) and low counts (lower tertile). The p values in (A) and (B) reflect the difference between the upper tertile and middle tertile groups and also the difference between the upper and lower tertile groups.Back to article page