A - Using an oxygen scrubber to separate exhaled anesthetic gasses from oxygen in a closed circuit 指用气体分流置将呼出的麻醉气体与封闭回路中的氧气分开
B - A form of euthanasia using carbon monoxide 指用一氧化碳进行安乐死
C - A segment of intestine invaginates into the lumen of an adjacent segment of intestine 指一段肠管内陷到相邻肠段的管腔内
D - A hereditary form of megaesophagus 指遗传性的巨食道
E - A form of early embryonic reabsorption in rabbits and rodents under stress 指在应激下兔和啮齿动物将早期胚胎重吸收