A is active, B is binding. A induces cAMP in these cells. Epithelial cells discharge large amounts of fluids and electrolytes. Exert effect when cells die and lyse - this can happen after antibiotic treatment. Fig 15.5 Pyrogenic response.
Symptoms are more general - fever, shock, malaise.
TNF damages blood vessels and permits escape of fluid. 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.