Search results
Results from the WOW.Com Content Network
A selection of viruslike particle-based vaccines against human papilloma virus (HPV) such as Cervarix by GlaxoSmithKline along with Gardasil and Gardasil-9, are available, produced by Merck & Co. Gardasil consists of recombinant VLPs assembled from the L1 proteins of HPV types 6, 11, 16, and 18 expressed in yeast.
Cell-based vaccine. Cell-based vaccines are developed from mammalian or more rarely avian or insect cell lines rather than the more common method which uses the cells in embryonic chicken eggs to develop the antigens. [1] The potential use of cell culture techniques in developing viral vaccines has been widely investigated in the 2000s as a ...
A DNA vaccine is a type of vaccine that transfects a specific antigen -coding DNA sequence into the cells of an organism as a mechanism to induce an immune response. [1] [2] DNA vaccines work by injecting genetically engineered plasmid containing the DNA sequence encoding the antigen (s) against which an immune response is sought, so the cells ...
A viral vector vaccine is a vaccine that uses a viral vector to deliver genetic material ( DNA) that can be transcribed by the recipient's host cells as mRNA coding for a desired protein, or antigen, to elicit an immune response. [1] As of April 2021, six viral vector vaccines, four COVID-19 vaccines and two Ebola vaccines, have been authorized ...
The Vi capsular polysaccharide vaccine (or ViCPS) is a typhoid vaccine recommended by the World Health Organization for the prevention of typhoid (another is Ty21a). The vaccine was first licensed in the US in 1994 and is made from the purified Vi capsular polysaccharide from the Ty2 Salmonella Typhi strain; it is a subunit vaccine .
Subunit vaccine. A subunit vaccine is a vaccine that contains purified parts of the pathogen that are antigenic, or necessary to elicit a protective immune response. [1] [2] Subunit vaccine can be made from dissembled viral particles in cell culture or recombinant DNA expression, [3] in which case it is a recombinant subunit vaccine .
An mRNA vaccine is a type of vaccine that uses a copy of a molecule called messenger RNA (mRNA) to produce an immune response. [1] The vaccine delivers molecules of antigen -encoding mRNA into immune cells, which use the designed mRNA as a blueprint to build foreign protein that would normally be produced by a pathogen (such as a virus) or by a ...
Attenuated vaccine. An attenuated vaccine (or a live attenuated vaccine, LAV) is a vaccine created by reducing the virulence of a pathogen, but still keeping it viable (or "live"). [1] Attenuation takes an infectious agent and alters it so that it becomes harmless or less virulent. [2] These vaccines contrast to those produced by "killing" the ...