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
27
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
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Ithasalwaysbeenaproblemtodecidewhether"popularmusic"ismusicwhichrepresentsthepeopleorissimplymusicthatthe
Sometimeago,Idiscoveredthatoneofthechairsinmyfronthallhadabrokenleg.Ididn’tforeseeanygreatdifficultyin
Ifyouwanttostayyoung,sitdownandhaveagoodthink.ThisistheresearchfindingofateamofJapanesedoctors,whosayt
Britainwasawealthycountryahundredandfiftyyears【C1】______.Therewerea【C2】______veryrichpeople【C3】______receivedmone
ForanincreasingnumberofstudentsatAmericanuniversities,Oldissuddenlyin.Thereasonisobvious:thegrayingofAmerica
Thelongyearsoffoodshortageinthiscountryhassuddenlygivenwaytoapparentabundance.Storesandshopsarechokedwithf
Thelongyearsoffoodshortageinthis’countryhavesuddenlygivenwaytoanapparentabundance.Storesandshopsarechokedw
随机试题
完全性胃肠外营养病人,营养液滴注后2小时出现口渴、头痛、尿多,首先处理是( )。
女,26岁,被家人发现躺在浴室内2小时送住院。发病前在密闭的浴室内用燃气热水器洗澡。既往健康。体检:血压110/78mmHg,睁眼,意识不清,呈深昏迷,四肢肌张力增强,无偏瘫征象,右侧巴氏征阳性。经过16天治疗后,患者意识清楚,肌张力、记忆力恢复正常。
善治厥阴头痛的药是
国内有将马来酸赛马洛尔以下列哪种卡波沫为辅料制成眼用凝胶治疗青光眼
在设计岸边式取水构筑物时,()需按保证率90%~99%的设计枯水位确定。
利率作为经济杠杆,具有以下()等方面的经济功能,对经济发挥着重要作用。
下列关于租赁的分类的说法中,不正确的是()。
如果仅有验收报告(或入库单)而并无购货发票,注册会计师应当审核每一份验收报告上面是否加盖暂估入库印章,否则,则认定被审计单位少计存货和应付账款。( )
已知微分方程y″+ay′+by=cex的通解为y=(C1+C2x)e—x+ex,则a,b,c依次为()
Whatisthefaxabout?Whatwillbediscussedwiththestaffofthesite?Detaileddemandforthe______.
最新回复
(
0
)