Figure 6
From: Feline aminopeptidase N is not a functional receptor for avian infectious bronchitis virus
fAPN is not a functional receptor for field strains of IBV. BHKexp.pCiNeo (A) or BHKexp.fAPN (B) cells were independently infected with IBV strain Ark99, Ark_DPI, CA99, Iowa97, Conn46, H52, and Mass41 for 12 h. Cell monolayers were labeled with monoclonal α-S1 or M (15:88, 13:18, or 9:19) antibodies to detect and determine viral infections. Viral infectivity was determined by counting approximately 106 cells in three separate experiments.