Fig. 2

Specific binding of mAbs to the PDCoV-S protein. (A) 1C2 or 5H5 binding to PDCoV proteins (S, -E, -M, and -N) was detected via IFA. Magnification, × 100. (B) Flow cytometry analyzed 1C2 (green) and 5H5 (blue) blocking of PDCoV S1 binding to receptor-expressing cells, LLC-PK1 (left) and BHK-pAPN cells (right). Negative serum (red) and secondary antibody (black) were controls