Microbiology and Immunology 2500A/B Lecture Notes - Lecture 21: Measles Virus, Virus, Virus Quantification

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Lecture 021 - viral infectious cycle and virology methods. First definition of a virus: could be filtered. Need a host (new leaves) for replication. Understanding the basics of an infection cycle and virological methods utilized to study it. Lab hosts utilized to study infectious cycle. Proteins are made and assembled into a new virion (along with new genetic material) Virions: vehicles to transmit a virus to a new host. Is infectious when it enters a new host cell. It is only termed virion after it exits the original host cell. Proteins on the particle alter cell biology (by interacting with host receptors) to allow the virion to enter the cell. Viral genome is exposed after entry into host cell. Host ribosome is used to translate and make viral proteins. Virus buds and becomes a virion in order to infect the next cell. During all of this, the host is fighting to prevent these steps from occurring.

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