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
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that
admin
2014-12-31
39
问题
Researchers say extra vitamin E fed to turkeys appears to help control infections from listeria(李氏杆菌). People who eat foods that contain this bacteria can get listeriosis(李氏杆菌病).
This disease is especially dangerous to pregnant women, newborn babies and people with weakened defenses. The United States has more than two thousand cases of listeriosis each year and five hundred people die of it. Some cases have been linked to poultry(家禽)products that have not been cooked enough. The researchers found that vitamin E improved the ability of turkeys to fight the growth of listeria. The findings could help other meat industries as well.
Irene Wesley led the study for the United States Department of Agriculture. Researchers from Iowa State University and the University of Arkansas also took part. The findings appeared in Poultry Science magazine earlier this year.
Vitamin E is found in oils from vegetables, grains and animals. It helps protect some kinds of fatty acids that are necessary for healthy cells. Vitamin E helps prevent oxygen from combining with these fats to cause damage to cells.
Turkeys need vitamin E for normal development. But the scientists added extra amounts to the diet of two groups of turkeys. The birds were one day old. Two other groups were not given any extra vitamin E. After six weeks, the researchers infected all the young turkeys with listeria. The scientists then tested the birds for the presence of the bacteria over a period of time.
The results showed that the birds that received extra vitamin E did not get infected as often as the others. The birds that received the largest amount had the lowest number of infections.
The scientists say vitamin E has a similar effect on chickens. They say chickens and turkeys that receive added vitamin E develop more infection-fighting cells called lymphocytes. The increased number of these cells appears to also help protect against other diseases that can be carried by birds.
The scientists continue tests. They want to see if vitamin E can stop other dangerous bacteria that can enter food. They are testing it against salmonella and Campylobacter.
Who took part in the research?
选项
A、Researchers from the University of Arkansas.
B、Researchers from Iowa State University.
C、Irene Wseley.
D、All the above.
答案
D
解析
细节题。根据短文第三段内容可判断出参与此研究的包括A、B、C三项,故D选项All the above正确。
转载请注明原文地址:https://kaotiyun.com/show/tRq7777K
0
大学英语四级
相关试题推荐
A、ThemancouldnotwaittoseeSusan.B、Susaniseagertopasstheinformationsheknows.C、Susantalkstopeopleonlyonthep
Americanshavelonger,butnotnecessarilyhealthierlivesduetohighratesofpreventablechronicdisease,accordingtoanann
A、Inabank.B、Inasupermarket.C、Inadoctor’soffice.D、Inalawyer’soffice.A场景推断题。男士告诉女士有关他的账户有几件事情不是很清楚,他想问女士几个问题;女士请男士首先
Gettingagoodnight’ssleephaslongbeenknowntoconsolidatetheday’smemories,movingthemfromshort-termstorageintolon
Gettingagoodnight’ssleephaslongbeenknowntoconsolidatetheday’smemories,movingthemfromshort-termstorageintolon
A、ThefinalexammightincludesomethinginChapter5.B、Thefinalexammightincludematerialsthatarenotdiscussedinclass.
A、Somepicklefromthesupermarket.B、Somemilkfromthesupermarket.C、Somestampsfromthepostoffice.D、Aparcelfromthepo
A、Hepaintsitpink.B、Hechangesitintohishomeoffice.C、Heturnsitintoamultifunctionalroom.D、Hereplacesitswindows
TodayAmericanparentsarefindingthemselvesinadilemmaabouthowtodealwithteenagedrinking,aserioussocialproblem.A
TodayAmericanparentsarefindingthemselvesinadilemmaabouthowtodealwithteenagedrinking,aserioussocialproblem.A
随机试题
第一次国共合作的基础是【】
下列句子中,含有使动用法的是()
以下哪一类型的急性非淋巴细胞白血病容易浸润组织
关节结节的功能面是
市场风险是指因市场价格的不利变动而使银行的表内和表外业务发生损失的风险,其中的市场价格包括()。
经过努力,甲、乙、丙、丁等品学兼优的中学生考上了北京大学、清华大学、南京大学、东南大学等4所名校,9月初甲、丙与乙、丁分别奔赴两座不同的城市去上学。已知:(1)甲没有上北京大学;(2)乙没有上清华大学;(3)丙没有上南京大学;(4)丁没有上东南大学。根据以
简述美国两党制的形成
人生目的是人在人生实践中关于自身行为的根本指向和人生追求,它所认识和回答的根本问题是()
下列关于计算机的论述中,其中错误的是
ArchitectureArchitecture,thepracticeofbuildingdesignanditsresultingproducts;customaryusagerefersonlytothose
最新回复
(
0
)