Figure 8.
(A–D) Human AMs express MARCO. Immunostaining of normal volunteer BAL cytocentrifuge preparations (A) and surgical lung tissue specimens (C) showed strong labeling by a rabbit anti–human MARCO antibody; control rabbit IgG showed only minimal nonspecific background staining (B, D) (original magnification 400). (E) Lysates prepared from BAL cells collected from adult volunteers (2/5 similar results shown) were analyzed by reducing SDS-PAGE and immunoblotted with a rabbit anti–human MARCO antibody or control rabbit IgG (Ctrl). Relative molecular mass standards are indicated (kD).