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. 2021 May 24;17(5):e1009229. doi: 10.1371/journal.ppat.1009229

Fig 2. Histopathological changes and viral detection in respiratory tracts of alpacas inoculated with MERS-CoV.

Fig 2

All respiratory tissues were fixed in 10% neutral-buffered formalin. (A) Nasal turbinate tissue sections of alpacas from the non-infected group (0 dpi), and from those necropsied on1 to 4 dpi. (B) Tissue sections of trachea, bronchus and lung (bronchiole and alveoli) from infected alpacas at 2 dpi. Original magnification: ×400 for all tissues. See S1 Table for the detailed distribution of MERS-CoV antigen (N protein) in respiratory tracts. Abbreviations: H/E, hematoxylin and eosin stain; IHC, immunohistochemistry; LB, large bronchus; SB, small bronchus.