| 1. | Cysts are the result of faulty embryogenesis .
囊肿由胚胎发育不全引起。
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| 2. | An amoeba forms a cyst when conditions are unfavourable .
当环境不利时，变形虫产生包囊。
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| 3. | In older infants and children infection in the cyst is common .
较大的病儿则以囊肿感染为常见。
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| 4. | Parasitic and nonparasitic cysts rarely occur in the spleen .
寄生虫性和非寄生虫性囊肿在脾脏很少发生。
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| 5. | Cysts should be excised and sterilized to avoid ingestion by the definitive host .
应该切除包囊并予以销毁，以防止被最终宿主食入。
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| 6. | Both solitary cysts and polycystic disease are usually not discovered until adulthood .
不论是孤立囊肿或囊病通常在成年时期才被发现。
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| 7. | At exploratory surgical operations, however, the unopened hydatid cyst should be excised .
然而，在探查性外科手术时，就应该把未开放的棘球蚴切除掉。
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| 8. | He was unable to prove conclusively how passage through the worm affected hatchability of cysts .
他未能结论性的证明为何经过蚯蚓则影响到胞囊的孵化力。
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| 9. | Each cysticercus consists of a cyst wall and a single scolex invaginated into the lumen .
每一个囊尾蚴是由一个囊壁和陷入囊腔中的单独一个头节所组成的。
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| 10. | A degenerating cyst is usually collapsed and surrounded by inflammatory exudate and fibrous connective tissue .
退化的包囊通常萎陷，并被炎性渗出物和纤维结缔组织所包围。
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