Micro 36: Viral Classification, Structure, and Replication
This episode opens the virology section by redefining what it means to be a pathogen. Drawing from Murray’s Chapter 36, it introduces viruses as obligate intracellular agents composed of nucleic acid wrapped in protein - sometimes cloaked in a lipid envelope - entirely dependent on host cellular machinery.
The narrative begins with viral structure: capsid symmetry (icosahedral, helical), enveloped versus non-enveloped forms, and genome type (DNA, RNA, single-stranded, double-stranded, positive-sense, negative-sense). Classification is framed through genomic logic rather than morphology alone…
The skinny
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