<p><b>A:</b> Plasma membrane-like localization of ZIP1 (red) in PMA-differentiated THP-1 macrophages. <b>B</b>–<b>C:</b> Staining of human lung sections (non-tumour area) for ZIP1 (red, B) and negative control (C). <b>D</b>: Sparse and predominantly nucleolar localization of ZIP2 in PMA-differentiated THP-1 macrophages. <b>E</b>–<b>F:</b> Staining of human lung sections (non-tumour area) for ZIP2. Macrophages were identified in separate experiments using CD68 marker (not shown). Panels E and F are representative microphotos of ZIP2 staining (red) of macrophages in two different patient biopsies, showing surface and cytoplasmic fluorescence. Blue = DAPI staining of nuclei. Scale bar represents 50 µm for all microphotos, and 16.7 µm in the insets.</p
