<prompt> All are true regarding staphylococcal toxin except -Beta haemolysin shows hot cold phenomenonMainly endotoxinEnterotoxin causes food poisoningExfoliative toxin causes Ritters disease  <response>: Option 1 b Hemolysin: Sphingomyelinase Exhibits hot-cold phenomenon b Hemolysis is better seen at 37oC Option 2 Staphylococcus does not produce endotoxin. Endotoxin Produced by gram - ve organisms, the only gram ve organism secreting endotoxin is listeria. Endotoxins are pa of the outer membrane of the cell wall of Gram-negative bacteria Option 3 Enterotoxins: Type A is responsible for most of the cases of food poisoning Option 4 Epidermolytic toxin Exfoliative toxin causes: 1. Scalded skin syndrome Nikolskys sign-epidermal layer separated 2. Severe- Ritter disease newborn, toxic epidermal necrolysis TEN adult 3. Milder- Pemphigus neonatorum, bullous impetigo 