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用高分辨率的薄层等电聚焦对棉铃虫各龄期幼虫的酯酶同工酶进行了比较，结果发现棉铃虫各龄幼虫都有10种相同的酯酶同工酶，它们的pl集中在pH3．5—5，5范围内。本文还从方法学的几个方面进行了探讨。
Esterase isozymes of H. armigera larvae at different instars were compared using high-resolution isoelectric focusing. The results showed that all larvae of H. armigera had 10 identical esterase isoenzymes, and their pl concentrations In the range of pH 3.5-5,5. This article also discusses several aspects of methodology.