This lowers blood pressure and results in shock. Plasmids and lysogeny Plasmids code for tetanospasmin, staphylococcal enterotoxin, the heat labile enterotoxin of some E. coli strains, an enzyme of Streptococcus mutans that is active in producing tooth decay and the coagulase of Staph aureus . Lysogenic conversion refers to the uptake of a lysogenic phage by a bacterial strain, resulting in new characteristics for the bacteria. Some viruses mimic useful substances and use the receptors for these substances as their means of entry. An example of this is the rabies virus which mimics acetylcholine 2.
Viruses induce enzyme release from lysosomes within the host cells resulting in apoptosis.
Inclusion bodies - these representvirus proteins or particles being assembled. May be acidic or basic. Syncytia or giant cells produced when viruses cause infected cells to fuse 3. Changes in function without visible effects 4. Interferon production 5.