Figure 4
From: Heme oxygenase-1 prevents smoke induced B-cell infiltrates: a role for regulatory T cells?
Inflammatory cells in lung tissue. Neutrophils and macrophages expressed in lung tissue after long term smoke exposure and protoporphyrin treatment. Neutrophils are expressed as numbers per mg lung homogenate. Macrophages are expressed as volume percentages. Smoke groups are represented by closed symbols and sham smoke groups by open symbols. The significant results of the regression analysis are depicted beneath the figures.