病毒的蛋白质外壳称为衣壳,遗传物质多为RNA或DNA。衣壳与核酸
分子统称为核衣壳。但以HIV为例,病毒表面还包裹着类似细胞膜的胞膜和刺突结构,与衣壳共同决定病毒的特异性。此外还有一些酶:如逆转录酶。
分类编辑
病毒不仅分为植物病毒,动物病毒和细菌病毒。从结构上还分为:单链RNA病毒,双链RNA病毒,单链DNA病毒和双链DNA病毒
病毒的生命过程大致分为:吸附,注入(遗传物质),合成(逆转录/整合入宿主细胞DNA),装配(利用宿主细胞转录RNA,翻译蛋白质再组装),释放五个步骤。
因为病毒会拉近细胞间距离,易使细胞相融形成多核细胞,进而裂解。
早期诊断尤其是首例的及时发现对鼠疫的防治至关重要。在流行区,流行初期或散发性不典型病例尤应特别注意。根据流行病学资料及典型临床表现,一般即可作出诊断。轻型病例需与急性淋巴结炎、恙虫病、钩端螺旋体病、兔热病等区别。对可疑需进行细菌学或血清学检查,检出鼠疫杆菌是确诊的最重要依据。受体细胞也叫宿主细胞。受体细胞有原核受体细胞(最主病毒通常由具有蛋白质外壳的遗传物质组成,它通过穿透细胞膜并向细胞释放大美国宾西法尼亚大学医学院研究人员表示,他们发现Kaposi肉瘤相关疱疹病毒(KSHV)能够欺骗受其感染的细胞完成病毒遗传物质复制。KSHV的这种复制手段能使其不被人体免疫系统察觉。过去
The virus's protein shell called the capsid, genetic material for RNA or DNA. Capsids and nucleic acids
Molecular collectively known as the nucleocapsid. However, HIV, for example, the virus surface is also wrapped with cell membrane and spike similar cell structure, together with the capsid determines the specificity of the virus. In addition there are some enzymes: such as reverse transcriptase.
Category Editor
Viruses are divided not only into plant viruses, animal viruses and bacterial viruses. Structurally also divided into: single-stranded RNA virus, double-stranded RNA virus, single-stranded DNA virus and double-stranded DNA virus
The virus's life processes can be broadly divided into five steps: adsorption, injection (genetic material), synthesis (reverse transcription / integration into host cell DNA), assembly (transcription of RNA using host cells, translation of proteins).
Because the virus will be closer to the distance between cells, easy to make cells fused to form multi-nuclear cells, and then lysis.
Early diagnosis, especially the first case of timely detection of plague prevention is essential. In endemic areas, special cases of prevalent or sporadic atypical cases should be given special attention. According to epidemiological data and typical clinical manifestations, generally can make a diagnosis. Light case with acute lymphadenitis, scrub typhus, leptospirosis, rabbit fever and other differences. Necessary for bacteriological or serological tests on suspects, the detection of Yersinia pestis is the most important basis for the diagnosis. Recipient cells are also called host cells. Recipient cells have prokaryotic receptor cells (the virus most often consists of a genetic material with a protein shell that penetrates the cell membrane and releases it to large cells.) University of Pennsylvania School of Medicine researchers found that Kaposi's sarcoma-associated herpes The virus (KSHV) is able to deceive infected cells in the replication of viral genetic material, and KSHV's replication means it can not be detected by the body's immune system.