针灸治疗蛇串疮,应主选的经穴是( )
Passage1
Lonely people, it seems, are at greater riskthan the gregarious of developing illnesses associated with chronicinflammation, such as heart disease and certain cancers. A paper published lastyear in the Public Library of Science, Medicine, shows the effect on mortalityof loneliness is comparable with thatof smoking and drinking after examining the results of 148 previous studies andcontrolled for factors such as age and pre-existing illness.
Steven Cole of the University ofCalifornia, Los Angeles, thinks he may know why this is so. He told theAmerican Association for the Advancement of Science meeting in Washington,D.C., about his work studying the expression of genes in lonely people. Dr.Cole harvested samples of white blood cells from both lonely and gregariouspeople. He then analysed the activity of their genes, as measured by theproduction of a substance called messenger RNA. This molecule carries instructions from the genes telling a cellwhich proteins to make. The level of messenger RNA from most genes was the samein both types of people. There were several dozen genes, however, that wereless active m the lonely, and several dozen others that were more active.Moreover, both the less active andthe more active gene types came from a small number of functional groups.
Broadly speaking, the genes less active in thelonely were those involved in staving off viral infections. Those that weremore active were involved in protecting against bacteria. Dr. Cole suspectsthis could help explain not only why the lonely are iller, but how, inevolutionary terms, this odd state of affairs has come about.
The crucial bit ofthe puzzle is that viruses have to be caught from another infected individual andthey are usually species-specific. Bacteria, in contrast, often just lurk inthe environment, and may thrive on manyhosts. The gregarious are therefore at greater risk than the lonely ofcatching viruses, and Dr. Cole thussuggests that past evolution has created a mechanism which causes white cellsto respond appropriately. Conversely, the lonely are better off ramping uptheir protection against bacterialinfection, which is a bigger relative risk to them.
What Dr. Cole seemsto have revealed, then, is a mechanism by which social environment reachesinside a person's body and tweaks its genome so that it responds appropriately.It is not that the lonely and the gregarious are genetically different fromeach other. Rather, their genes are regulated differently, according to howsociable an individual is. Dr. Cole thinks this regulation is part of a widermechanism that tunes individuals to the circumstances they find themselves in.
Dr. Cole made an analysis of the activity of the genes by_____.
接地装置是接地体和接地线的总称。运行中电气设备的接地装置应当始终保持良好状态。关于接地装置要求的说法,正确的是( )。
患儿,6岁。发热2天,出现淡红色小丘疹,根盘红晕,丘疹上部可见疱疹,形态椭圆,疱浆清亮,皮疹以躯干为多,苔薄白,脉浮数,其治法是( )
疏风清热,利湿解毒
清气凉营,解毒化湿
发散风寒,清热利湿
芳香化湿,兼以健脾
清解郁热,活血化瘀
女,45岁。反复排黏液血便5年,加重3个月。抗生素治疗无效。肠镜示直肠至结肠脾曲黏膜弥漫性充血、水肿,较多糜烂及表浅小溃疡。最可能的诊断是( )。
溃疡性结肠炎
克罗恩病
细菌性痢疾
阿米巴痢疾
肠结核