complement

TWiV 544: Immunogaga

The TWiV team reveals the repertoire of anti-viral antibodies in newborn humans, and a complement protein that binds the adenovirus capsid and prevents release of the viral DNA. Click arrow to play Download TWiV 544 (65 MB .mp3, 108 min) Subscribe (free): iTunes, Google Podcasts, RSS, email Become a patron of TWiV! Show notes at microbe.tv/twiv

Virus-induced fever might change bacteria from commensal to pathogen

Neisseria meningitidis may cause septicemia (bacteria in the blood) and meningitis (infection of the membrane surrounding the brain), but the bacterium colonizes the nasopharynx in 10-20% of the human population without causing disease. Although understanding how the bacterium changes from a commensal to a pathogen has been elusive, an important property is believed to be the ability …

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TWiV 112: Creating a killer poxvirus

Hosts: Vincent Racaniello, Alan Dove, and Rich Condit On episode #112 of the podcast This Week in Virology, Vincent, Alan, and Rich review the making of a virulent poxvirus by insertion of the gene encoding IL-4, and severe 2009 H1N1 influenza due to pathogenic immune complexes. [powerpress url=”http://traffic.libsyn.com/twiv/TWiV112.mp3″] Click the arrow above to play, or right-click to …

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Natural antibody protects against viral infection

Antibodies produced by infection with a virus, or after immunization with viral vaccines, are effective at preventing viral disease. However humans and higher primates contain “natural antibodies” which are present in serum before viral infection. Natural antibodies can activate the classical complement pathway leading to lysis of enveloped virus particles long before the adaptive immune …

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