[Preparation and partial characterization of monoclonal antibodies specific for nuclear protein of avian influenza virus].

Aim: To prepare the monoclonal antibodies (mAbs) specific for nuclear protein (NP) of avian influenza virus (AIV) and identify their biological properties.

Methods: BALB/c mice were immunized with AIV (formaldehyde-inactivated AIV H9N2, Triton X-100-lysed H9N2 and AIV NP expressed in E.coli, respectively).