Schematic diagram of the immunochromatographic strip (ICS) and interpretation of the results detected by the ICS. (a) Schematic diagram of the ICS. The sample pad, conjugate pad, immobilized nitrocellulose membrane, and absorption pad were glued together on a plastic backing plate. At the test band (T) and control band (C), the purified recombinant UL51 protein of DEV and the rabbit IgG were immobilized, respectively. (b) Interpretation of the results detected by the ICS. A negative result and a positive result were showed in the picture, respectively.