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Unformatted text preview: 1). Prophage (latent) transcription & translation 2). Protein produced by bacterial cell 3). Protein toxins host (human) tissues infected 4). New type disease produced VIRAL MUTATIONS A. Spontaneous mutations : 1). Causes antigenic drift - changes in structure new antigenic strains 2). Responsible for repeated epidemics - ex. influenza. B. Induced mutations : 1). Production of attenuated (weakened) strains. 2). Used to produce viable vaccines. VIRAL TERATOGENESIS A. Production of defects during embryonic development. B. Example : Rubella viruses ( German measles ) 2. Cytomegalovirus ( CMV ) 3. HIV 4. Small pox viruses...
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