In this paper, immunoglobulin Y and immunoglobulin G were extracted from the yolk of hens and rabbits, which were immunized with Zucchini yellow mosaic virus(ZYMV). The IgY and IgG were etected by means of several kinds of serological reaction and the results were compared. The results showed: immunized after twenty-five days, the titer of antiserum of IgY and IgG by means of tube precipitation were 1/64 ,1/512, respectively. In agar diffusion test, there was no clear precipitin bands formation when antibod...