Fig. 1.

Histology of lungs 7 days after intratracheal injection of saline or bleomycin. Sections of lung from saline-treated wild-type mice (a) and bleomycin-treated wild-type (b), LTC₄S null (c), and CysLT₁ receptor null (d) mice are stained by chloroacetate esterase reaction with counterstaining with hematoxylin. High-power magnification views of cell types (e-h, arrow) observed in the pathobiologically condensed areas of the lung after bleomycin treatment. Eosinophils (g) are depicted by staining with Congo red.