Fig. 4
From: A case of localized tracheobronchial relapsing polychondritis with positive matrilin-1 staining
Histopathological findings of the surgical biopsy specimen from the trachea. a Histological examination by hematoxylin-eosin staining of the lesion shows infiltration of inflammatory cells with destruction of the cartilage. b-d Immunohistochemical staining of tracheal wall with anti-CD3 (b), anti-CD20 (c), or anti-CD68 (d) antibody. Arrow represents CD3-, CD20- or CD68- positive cells, respectively. Magnifying power is (×100) except for (C) (×200). Asterisks represent tracheal cartilage. Bar, 100 μm