File:Measles virus.JPG
原始文件 (3,060 × 3,081像素,文件大小:1.03 MB,MIME类型:image/jpeg)
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[编辑]描述Measles virus.JPG |
English: This thin-section transmission electron micrograph (TEM) revealed the ultrastructural appearance of a single virus particle, or “virion”, of measles virus. The measles virus is a paramyxovirus, of the genus Morbillivirus. It is 100-200 nm in diameter, with a core of single-stranded RNA, and is closely related to the rinderpest and canine distemper viruses. Two membrane envelope proteins are important in pathogenesis. They are the F (fusion) protein, which is responsible for fusion of virus and host cell membranes, viral penetration, and hemolysis, and the H (hemagglutinin) protein, which is responsible for adsorption of virus to cells.
There is only one antigenic type of measles virus. Although studies have documented changes in the H glycoprotein, these changes do not appear to be epidemiologically important (i.e., no change in vaccine efficacy has been observed). Prior to 1963, almost everyone got measles; it was an expected life event. Each year in the U.S. there were approximately 3 to 4 million cases and an average of 450 deaths, with epidemic cycles every 2 to 3 years. More than half the population had measles by the time they were 6 years old, and 90 % had the disease by the time they were 15. This indicates that many more cases were occurring than were being reported. However, after the vaccine became available, the number of measles cases dropped by 98 % and the epidemic cycles drastically diminished. Measles virus is rapidly inactivated by heat, light, acidic pH, ether, and trypsin. It has a short survival time (<2 hours) in the air, or on objects and surfaces.Afrikaans: Die maselsvirus.
Deutsch: TEM-Aufnahme (Transmissions-Elektronen- Mikroskopie) eines Masernvirus |
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授权 (二次使用本文件) |
PD-USGov-HHS-CDC English: None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image. |
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[编辑]Public domainPublic domainfalsefalse |
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Transwiki approved by: w:en:User:Dmcdevit
This image was copied from wikipedia:en. The original description was:
A transmission electron micrograph (TEM) of the ultrastructural appearance of a single virus particle, or “virion”, of measles virus. The measles virus is a w:en:paramyxovirus, of the genus w:en:Morbillivirus. It is 100-200 nm in diameter.
原始上传日志
[编辑]date/time | username | resolution | size | edit summary |
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22:05, 2 July 2006 | w:en:User:Joelmills | 3060×3081 | 1.03 MB | A <a href="/wiki/TEM" title="TEM">transmission electron micrograph</a> (TEM) of the ultrastructural appearance of a single virus particle, or “virion”, of <a href="/wiki/Measles" title="Measles">measles virus</a>. The measles virus is a <a href="/wiki/Paramyxovirus" title="Paramyxovirus">paramyxovirus</a>, of the genus ''<a href="/wiki/Morbillivirus" title="Morbillivirus">Morbillivirus</a>''. It is 100-200 nm in |
Image description page history
[编辑]link | date/time | username | edit summary |
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http://en.wikipedia.org/w/index.php?title=Image:Measles_virus.JPG&redirect=no&oldid=61748909 | 11:11, 11 September 2007 | w:en:User:Dmcdevit | |
http://en.wikipedia.org/w/index.php?title=Image:Measles_virus.JPG&redirect=no&oldid=61748909 | 22:05, 2 July 2006 | w:en:User:Joelmills | (A <a href="/wiki/TEM" title="TEM">transmission electron micrograph</a> (TEM) of the ultrastructural appearance of a single virus particle, or “virion”, of <a href="/wiki/Measles" title="Measles">measles virus</a>. The measles virus is a <a href="/wiki/Paramyxovirus" title="Paramyxovirus">paramyxovirus</a>, of the genus ''<a href="/wiki/Morbillivirus" title="Morbillivirus">Morbillivirus</a>''. It is 100-200 nm in) |
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当前 | 2007年9月13日 (四) 15:56 | 3,060 × 3,081(1.03 MB) | BetacommandBot(留言 | 贡献) | Transwiki approved by: w:en:User:Dmcdevit This image was copied from wikipedia:en. The original description was: A transmission electron micrograph (TEM) of the ultrastructural appearance of a single virus particle, or “virion”, of |
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宽度 | 3,060 px |
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高度 | 3,081 px |
压缩方案 | LZW |
像素构成 | 调色板 |
色彩组分数 | 1 |
每带行数 | 4 |
水平分辨率 | 300 dpi |
垂直分辨率 | 300 dpi |
使用软件 | Adobe Photoshop 7.0 |
文件修改日期时间 | 2006年1月24日 (二) 09:00 |