Table 1. Primary antibodies used in the present case.

Antibody	Clone	Dilution	Source	Antigen retrieval	Positive control tissue (Asian palm civet)
Pan-Cytokeratin	AE1/AE3	1:300	Abcam, Cambridge, MA, USA	Microwave (100°C) for 15 min in citrate buffer, pH 6.0	Epidermis and adnexa of the skin
Vimentin	V9	1:300	Abcam	Microwave (100°C) for 15 min in citrate buffer, pH 6.0	Macrophages and smooth muscle in the lung
Iba-1	20A12.1	1:400	Millipore, Billerica, MA, USA	Microwave (100°C) for 15 min in citrate buffer, pH 6.0	Alveolar macrophages in the lung
CD 204	Polyclonal antibody	1:300	Abcam	Microwave (100°C) for 20 min in citrate buffer, pH 6.0	Alveolar macrophages in the lung
HLA-DR	LN3	1:300	Novocastra, Chicago, IL, USA	Microwave (100°C) for 30 min in citrate buffer, pH 6.0	Subcutaneous macrophages
Smooth muscle actin	1A4	1:300	Cell Marque, St. Louis, MO, USA	Microwave (100°C) for 20 min in citrate buffer, pH 6.0	Smooth muscle of the bronchioles