Two days later after the treatment of 0-E (μg), topical application of JH Ⅲ (μg) shortened nymphal molting period (-PE) 剂量μg 0-E处理后天(-PE)再用μg JH Ⅲ处理可缩短若虫蜕化期,表明JH Ⅲ不能逆转0-E的作用.