Southern和Vestern印迹法 32P-labled DNA probe Transfer of DNA by DNA frangme nt Electrophoresis blotting. Autoradiography Agarrose gel Nitrocellulose Autoradiogram sheet Add radiolabled spesfic antibody Wash to Transfer Protein band remove unboud detected by protein antibody→ Autoradiography specific antibody SDS-Polyacrylamide Polymer Autoradiogram gel sheet Southern和Western印迹法 DNA frangmentElectrophoresis Transfer of DNA by blotting 32P-labled DNA probe Autoradiography Agarrose gel Nitrocellulose Autoradiogram sheet Polymer Autoradiogram sheet SDS-Polyacrylamide gel Transfer protein Add radiolabled spesfic antibody , Wash to remove unboud antibody Protein band detected by specific antibody Autoradiography