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昆虫杆状病毒增效蛋白（ｅｎｈａｎｃｉｎ）也称病毒增效因子（ｖｉｒａｌｅｎｈａｎｃｉｎｇｆａｃｔｏｒ，ＶＥＦ），是由某些杆状病毒基因编码具有促进核型多角体病毒（ｎｕｃｌｅｏｐｏｌｙｈｅｄｒｏｖｉｒｕｓ，ＮＰＶ）感染的一类金属蛋白酶［１］，具酯酶活性［２］。
The insect baculovirus enhancin, also known as viralenhancing factor (VEF), is a type of metalloproteinase with some baculovirus genes encoding for promoting nucleopolyhedrovirus (NPV) infection [ 1], with esterase activity [2].