Biology 1001A Chapter Notes - Chapter 23: Exocytosis, Complementary Dna, Retrovirus
21 Sep 2017
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Seth berkeley: hiv and flu- the vaccine strategy: flu: genetically mutates occasionally but dramatically to get a new virus. Vaccines: create a catch of weapons for your immune system that you can later deploy. If a flu virus mutates, then the antibodies get confused and don"t know what they"re looking at. 2003- h5n1 the virus came from birds and infected humans (not easily transmitted) H1n1- swine flu to humans and it was easily transmitted. Hiv: mutates furiously, attacks anything trying to find it. For vaccines to be effective, they have to be accessible to everyone. Polyhedral virus: infects animals, plants and bacteria, protein spike that provide host cell recognition extend from corners. Reverse transcriptase (r. t. : hiv (retrovirus) containing 2 copies of single-stranded rna, carries several molecules of an enzyme, reverse transcriptase in its capsid. Why is hiv lethal: targets human immunes system, compromises body to fight, some immune cells act as continuing source of infection.
