利用马立克氏病病、死鸡的皮肤（羽囊）打碎、制成MD琼扩抗原。
MD agar diffusion antigens were prepared by grinding the skins or feather follicles of dead or sick chickens due to Marek's disease.
如果一块移植的皮肤含有一种不同于宿主的抗原，宿主将产生抗体来对抗它。
If a piece of grafted skin contains an antigen different from the host's, the host will make antibodies against it.
对210例荨麻疹抗原皮肤试验的结果作了观察。
Result of antigen skin test of 210 cases of urticaria was observed.
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