Figure 1

Hepatocyte growth factor (HGF) immunostaining of bronchoalveolar lavage (BAL) cells. BAL cytocentrifuge smears were immunostained with a monoclonal anti-human-HGF antibody or with a nonspecific mouse immunoglobulin of the same isotype as a negative control (magnification, × 800). A, Alveolar neutrophils stained strongly positive, whereas macrophages were weakly positive. B, Control antibody.