这是因为y基因的活性受四个加强子调控，当绝缘子正好插在开始工作子的上游时，就在翅肩(wing blade)和躯体上皮(body cuticle)社团中阻断基因的活化(来自上游的加强子)，但不阻断在刚毛(bristles)和跗足(farsal claws)社团中y基因的表达(来自下游的加强子)。
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Skin-care products made from papain such as papain whitening soap, soap, facial cleanser and body wash can help remove cuticle, thus making you skin soft, tender and full of vigor.
木瓜酶为主成分制成的木瓜白肤香皂、皂、面奶、浴露等美容护肤产品可有效去除死皮，令肌肤鲜嫩柔和，充满活力。
The results showed that infected larvae cuticle gradually became dark brown, the whole body of the insect thickened and reduced in size.
结果显示，感病虫体颜色由局部浅褐色逐渐变为大面积深褐色，病虫出现缩短、强直等外部形态的变化。
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