1 . A method of detecting a test subject having two or more kinds of antigens which enable detection of said test subject, said method comprising detecting said test subject by an immunoassay using a monoclonal antibody or an antigen-binding fragment thereof which recognizes said two or more kinds of antigens.
2 . The method according to claim 1 , wherein said immunoassay is a sandwich method in which said monoclonal antibody or an antigen-binding fragment thereof is used in at least one of a label and a solid phase.
3 . The method according to claim 2 , wherein said immunoassay is an immunochromatography method.
4 . The method according to any one of claims 1 to 3 , wherein said two or more kinds of antigens recognized by said monoclonal antibody form a composite.
5 . The method according to claim 1 , wherein said test subject is Mycoplasma pneumoniae.
6 . The method according to claim 5 , wherein said two or more kinds of antigens are P1 protein and P30 protein.
7 . An immunoassay instrument for carrying out the method according to claim 1 , wherein said monoclonal antibody or an antigen-binding fragment thereof is used in at least one of a label and a solid phase.
8 . The immunoassay instrument according to claim 7 , wherein said immunoassay instrument is an immunochromatographic strip.
9 . The immunoassay instrument according to claim 7 or 8 , wherein said test subject is Mycoplasma pneumoniae.
10 . The immunoassay instrument according to claim 9 , wherein said two or more kinds of antigens are P1 protein and P30 protein.
11 . A monoclonal antibody specifically reacting with P1 protein and P30 protein derived from Mycoplasma pneumoniae.