Figure 5From: Tenascin-C and alpha-smooth muscle actin positive cells are increased in the large airways in patients with COPDCorrelation between staining for Tenascin C and α-SMA in all subjects. Increasing degree of staining is indicated by categories a-c and a-d. Number in the circles indicate number of subjects. The estimate for the correlation coefficient was 0.6; P < 0.0001.Back to article page