首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins research
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins research
admin
2011-03-01
55
问题
Some animals apparently can resist cancer by strengthening their immune system in preparation for winter, Johns Hopkins researchers said on Wednesday.
The scientists said their study is the first to show that the central nervous system, reacting to environmental changes, may spark changes in the body’s immune system that control the growth of tumors.
They said if that is the ease, a better understanding of how the process works eventually could lead to new cancer treatments.
Dr. Randy Nelson, an associate professor of psychology at Hopkins, stressed at a meeting of the Society of Neuroscience that further study would be needed to confirm a connection between the length of the day, the animals’ immune system and cancer. More work also would be needed to show that the findings could be applied to human cancer.
Dr. Faye Austin, an immunologist with the National Cancer Institute in Bethesda, said: "It’s a very intriguing observation that the length of exposure to light can affect the growth of a tumour. But I think that the draws really need further work to clarify the mechanics."
But Austin said the findings were surprising and important, only because they open up a new approach for research.
Studies showed that stress weakened the immune system in animals. They figured that because winter is stressful, the season probably causes exertion (影响) on the immune system.
The researchers reasoned that animals that compensated by boosting (促进) their immune systems as winter approached would have a better chance of surviving and producing offspring.
"In the same way that animals have evolved to select the best time to breed, it struck me that animals ought to be able to predict when conditions would be challenging immunologically." Nelson said.
Dr. Nelson has drawn a conclusion that ______.
选项
A、the findings of animals’ resistance to cancer can be applied to human cancer treatments
B、the length of exposure to light can affect the growth of a tumor
C、there is a relation between the length of the day, the animals’ immune system and cancer
D、there is a new approach for studying the function of central nervous system in the body’s immune system
答案
D
解析
文中第二段说明了霍普金斯的研究人员在研究中发现了中枢神经系统会对变化的环境做出反应并导致生物体内的免疫系统发生变化。与D选项的意思最为接近。选项C不合题意,因为在第四段中Neison认为还需要进一步研究加以确认D选项所表述的意思。
转载请注明原文地址:https://kaotiyun.com/show/rAkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Playistheprincipalbusinessofchildhood,andmoreandmoreinrecentyearsresearchhasshownthegreatimportanceofplayi
Idon’tknowhowIbecameawriter,butIthinkitwasbecauseofacertainforceinmethathadtowriteandthatfinallyburst
Theevolutionofartificialintelligenceisnowproceedingsorapidlythat【C1】______theendofthecenturycheapcomputers【C2】
Likefinefood,goodwritingissomethingweapproachwithpleasureandenjoyfromthefirsttastetothelast.Andgoodwriters
Wheredidthewomanfindoutabouttheuniversitystation?
ForanincreasingnumberofstudentsatAmericanuniversities,Oldissuddenlyin.Thereasonisobvious:thegrayingofAmerica
Thelongyearsoffoodshortageinthis’countryhavesuddenlygivenwaytoanapparentabundance.Storesandshopsarechokedw
随机试题
患者男性,52岁,诊断皮肤T细胞淋巴瘤,以下免疫分型抗原表达于T系的是
葡萄糖和脂肪酸分解进入三羧酸循环的共同中间代谢产物是()
呆小症与侏儒症的最大区别是
下列符合住宅室内装饰装修行为规定的有( )。
卫星通信中,信号由发端地球站经卫星转发到收端地球站单程传输延迟约为0.27s会产生()。
县级以上地方各级人民政府公安机关督察机构的督察长、副督察长在任,免前,必须征求上一级公安机关的意见。()
截至2019年3月31日,证券业协会对证券公司2019年第一季度经营数据进行了统计。131家证券公司当期实现营业收入1018.94亿元,同比增长54.47%。 其中,各主营业务收入分别为代理买卖证券业务净收入(含席位租赁)221.49亿元,同比增长13
导致低钙血症的外科疾病中,不包括下述哪一种
求f(x)=的间断点并判断其类型.
Inanagewhereglobalizationisthetrend,learningaforeignlanguagebecomesessential.Becauseofglobalization,citizenso
最新回复
(
0
)