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【单选题】

Transplant surgeons work miracles. They take organs from one body and integrate them into another, granting the lucky recipient a longer, better life. Sadly, every year thousands of other people are less fortunate, dying while they wait for suitable organs to be found. The terrible constraint on organ transplantation is that every life extended depends on the death of someone young enough and healthy enough to have organs worth transplanting. Such donors are few. The waiting lists are long, and getting longer. from this constraint is the dream of every transplant surgeon. So far attempts to make artificial organs have been disappointing: Nature is hard to mimic. Hence the renewed interest in trying to use organs from animals. Doctors in India have just announced that they have successfully transplanted a heart from a pig into a person. Pressure to increase the number of such 'xenotransplants' (异种移植) seem to be growing. In Europe and America, herds of pigs are being specially bred and genetically engineered for organ donation. During 1996 at least two big reports on the subject—one in Europe and one in America were published. They agreed that xenotransplantation was permissible on ethical grounds, and cautiously recommended they be allowed. The ethics of xenotransplantation are relatively unworrying. People already kill pigs both for food and for sport killing them to save a human life seems, if anything, easier to justify. However, the science of xenotransplantation is much less straightforward. Import an organ from one animal to another and you may bring with it any number of infectious diseases. That much is well known. However, coping with this er is not merely a matter of screening for obvious ills such as parasites. Many diseases that could harm humans may be both undetectable and harmless in their natural hosts. Diseases that have been dormant for years may suddenly become active if they find themselves in a new environment, such as a human recipient's body. After that, they may start to infect other people. Despite transplant surgeons' work, every year many people die because______.

A.
they are unlucky patients
B.
organ transplantation is unreliable
C.
there are not enough proper organs for transplantation
D.
few people are willing to donate their organs after death
题目标签:异种移植移植
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【单选题】肾移植最佳的供者是

A.
有血缘关系的亲属
B.
父母子女
C.
异卵孪生
D.
同胞兄弟姐妹
E.
同卵孪生

【单选题】下列哪项不可以是法的移植内容( )

A.
反垄断法
B.
专利法
C.
立法技术
D.
政府组织法

【单选题】异种移植成功的最大障碍是

A.
超急性排斥反应
B.
细菌感染
C.
病毒感染
D.
Ⅰ型超敏反应
E.
迟发性异种移植排斥反应

【单选题】骨移植是

A.
活体移植
B.
细胞移植
C.
器官移植
D.
组织移植
E.
异种移植

【多选题】有关皮片移植,正确的是( )

A.
皮片切取后的初期收缩,越薄的皮片收缩越重
B.
皮片切取后的初期收缩,越厚的皮片收缩越重
C.
皮片存活后的后期收缩,越薄的皮片收缩越重
D.
皮片存活后的后期收缩,越厚的皮片收缩越重
E.
与肢体屈侧移植的皮片相比,伸侧移植的皮片更易后期收缩

【单选题】骨髓移植时,预防GVHR特定的方法是

A.
ABO 血型配型
B.
HLA 配型
C.
选择性地去除移植物中针对宿主抗原的 T 细胞
D.
ABO 血型配型和 HLA 配型
E.
免疫抑制药物的使用

【单选题】大树移植的意义是()

A.
调整绿地树木种植密度
B.
对建设工地原有树木保护
C.
城市景观建设需要
D.
所有选项都正确

【单选题】下列有关核移植的叙述中,正确的是( )

A.
卵母细胞最好选择减数第一次分裂中期的卵母细胞
B.
胚胎核移植难度明显高于体细胞核移植
C.
供体细胞应选择传代10代以内的细胞
D.
通过体细胞核移植方法生产的克隆动物是对体细胞动物进行了100%的复制