缺失突变

Sickle cell disease is a blood disorder due to a single genetic mutation. It remains in populations because the mutation has a flip sideit helps to protect against malaria. Now another mutation has been shown to afford similar protection. Deficiency

发表于:2018-12-24 / 阅读(45) / 评论(0) 分类 Scientific American(十二)月

Scientists have identified a unique genetic mutation in about 10 percent of people with type 2 diabetes(糖尿病) studied in the United States and Europe. The discovery could help some people learn if they are at risk of developing diabetes so they

发表于:2019-01-11 / 阅读(86) / 评论(0) 分类 英语新闻

By Kari Barber Dakar 06 July 2007 After years of turmoil and economic hardship, the small West African nation of Guinea Bissau is facing a health challenge caused by the absence of iodine in the nation's diet. In countries where iodine is not already

发表于:2019-01-16 / 阅读(86) / 评论(0) 分类 2007年VOA标准英语(七月)

Gene for Disease Has Healthy Flip Side A study in the journal Science finds that the gene for anemia-causing G6PD deficiency also protects against malaria, thereby keeping the gene active in populations. Cynthia Graber reports Sickle cell disease is

发表于:2019-01-30 / 阅读(142) / 评论(0) 分类 60秒科学

LOS ANGELES, March 3 (Xinhua) -- More and more American adults are suffering from a decline in overall sleep duration(持续时间), the U.S. Centers for Disease Control and Prevention (CDC) (疾病防治中心) said on Thursday. It's recommended tha

发表于:2019-02-01 / 阅读(54) / 评论(0) 分类 英语新闻

[00:13.73]Mental deficiency [00:16.10]智力缺陷 [00:19.02]Would you mind telling me, Doctor, [00:22.09]Bob asked... [00:23.67]how you detect a mental deficiency in somebody [00:28.05]who appears completely normal? [00:31.34]Nothing is easier, he r

发表于:2019-02-22 / 阅读(49) / 评论(0) 分类 英语笑话(MP3+文本)
学英语单词
activist monetary rule
algarroba beans
an nefuds
andonios
anecdotage
as keen as razors
avenger
ball-valve action
beyond the pale
Boqueron
bromosilane
brood gallery
c-cup
calcite pegmatite
cd copy
ceranoid
circular-grained graphite
coal collector
complex-stress fatigue test
core winding
demand-paged virtual memory
dentproof
Desmethyldopan
donopon-GP
dry steam humidifier
dusken
Ebstein's leukemia
editing specification
educational pluralism
embargo on ship
Etruscologist
family Caryocaraceae
filtering procedures
fire installation
front crawl position
furca orbitalis
gutes
hCE-2
header capacitance
hensel
hereditary stomatocytosis
herpes simplex virus (hsv)
hydrogen ion
increased resistance invasion
iodotubercidin
kincer
Kutaraja
lady's seal
leopons
Linnaea
lithium tritoxide
longitudinal resonance
lymphonodi ilici
malignant tumor of liver
mallet toe
mesoepididymis
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microcoulometer
mild steel shank
model generator
monthly financial statement
neighbours from hell
nempt
nest box
noise spurious signal
open-wire loop
plesiopia
plexus submucosus
Polymorphina
Polymorphus
pronounced
Pulaski County
rear arm
record transfer mode
retrieval package
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workpiece magazine
wristdrop
zebdani (az zabadani)