The hot-cold phenomenon is seen due to which toxin-
Correct Answer: Beta lysin
Description: Beta hemolysin: is a sphingomyelinase hemolytic for sheep Blood cells but not for human or rabbit blood cells . It exhibits hot cold phenomenon the hemolysis being at 37degC but becoming evident only after chilling Ref: Ananthanarayan & paniker's Textbook of Microbiology 9th edition pg no 202
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