Objective To find out whether laparoscopic assisted was better than open abdomino-perinea l resection for low rectal adenocarcinoma.
目评估低位直腹腔镜辅助下手术是传统腹会阴联合切除术。
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Elasmobranchs detect these via organs called the ampullae of Lorenzini, which are jelly-filled receptors scattered around their noses and mouths that serve to sense the electrical fields generated by potential prey's muscles.
Elasmobranchs 通过称为 Lorenzini 壶器官检测到这些,这些器官是散布在鼻子嘴巴周围充满果冻受体,用于感知潜在猎物肌肉产生电场。
That’s because snakes are essentially stick-look-alikes whose hundreds of rib muscles and huge ventral scales help them move in a way that no other predator does, which kept them incognito and helped them chow down on unsuspecting prey.
那是因为蛇本质上是长得像棍子动物,其数百条肋骨肌肉巨大鳞帮助它们以其他捕食者所没有方式移动,这使它们隐身并帮助它们吞噬毫无戒心猎物。
" Alaska populations of olive-sided flycatchers are just on this razor-thin margin of what's biologically possible, " said Julie Hagelin, a wildlife research biologist at the Alaska Department of Fish and Game and a senior research scientist at the University of Alaska Fairbanks.
阿拉斯加鱼与猎物部野生动物研究生物学家、阿拉斯加大学费尔班克斯分校高级研究科学家朱莉·哈格林 (Julie Hagelin) 表示:“阿拉斯加橄榄鹟种群数量在生物学上可能性微乎其微。”