Figure 7 Representative immunohistochemical analysis of (B, E) CCR7 and (C, F) CD45 in serial histological sections from (A–C) UIP and (D–F) NSIP patient groups. Panel (A) and (D) show control staining. In UIP SLBs, CCR7 immunoreactivity (red staining in B) partially overlapped with CD45 immunoreactivity (C), with most of the dual staining associated with mononuclear cells (C). (A, F) In serial histological sections, CCR7 and CD45 did not appear to colocalise in NSIP SLBs. Original magnification, ×200. CCR7, CC chemokine receptor 7; NSIP, non‐specific interstitial pneumonia; SLB, surgical lung biopsy; UIP, usual interstitial pneumonia.