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The McAb 4D4 recognizes PEDV-infected Vero E6 cells and native M protein of PEDV. (A) IFA test of PEDV-infected Vero E6 cells probed with McAb 4D4 (i) and negative serum (ii); (B) PEDV particles (lane 1) and TGEV particles (lane 2) were evaluated for reactivity with McAb 4D4 by WB; the PEDV particles (lane 3) incubated with negative serum represent the negative control. M: Protein marker
