MEASLES VIRUS
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 (, no change in vaccine efficacy has been observed).
Size: 3060px × 3081px
Location: France
Photo credit: © CDC / BSIP / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: electron, electronic, em, examination, imaging, investigation, measles, medical, medicinal, medicines, mev, micrograph, micrography, microscope, microscopes, microscopy, miscroscopy, paramyxovirus, paramyxoviruses, results, rna, technique, techniques, test, transmission, virion, virions, virus, viruses
