The application belongs to the technical field of biomedical detection, and discloses an
antibody pair against
canine coronavirus N
protein, a preparation method thereof, a
nucleic acid molecule, a
cell strain and application. The
antibody pair or
antigen binding fragment thereof comprises a first
antibody or
antigen binding fragment thereof, wherein the first antibody or
antigen binding fragment thereof comprises
amino acid sequences of
heavy chain variable region complementarity determining regions 1-3 as shown in SEQ ID NO: 1-3, and
amino acid sequences of light chain variable region complementarity determining regions 1-3 as shown in SEQ ID NO: 4-6; and a second antibody or
antigen binding fragment thereof, wherein the second antibody or
antigen binding fragment thereof comprises
amino acid sequences of
heavy chain variable region complementarity determining regions 1-3 as shown in SEQ ID NO: 7-9, and amino acid sequences of light chain variable region complementarity determining regions 1-3 as shown in SEQ ID NO: 10-12. The antibody pair provided by the application has a
high titer, and has
strong binding capacity with
canine coronavirus N
protein, and can realize high specificity and high sensitivity detection of
canine coronavirus without interference of other viruses and drugs.