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采用酶联免疫吸附技术（ＥＬＩＳＡ）（Ａ－蛋白夹心法）对北京地区的葡萄品种进行扇叶病毒（ｆａｎｌｅａｆｖｉｒｕｓ）的测定。结果表明，北京地区葡萄品种普遍感染扇叶病毒且带毒情况较为严重。
The grapevine samples of Beijing area were assayed for fanleaf virus by enzyme-linked immunosorbent assay (ELISA) (A-protein sandwich method). The results showed that grapevine varieties in Beijing were commonly infected with the virus and infected with virus was more serious.