Examples of type I hypersensitivity is:: (A) Lepromin test, (B) Tuberculin, (C) Casoni's test, (D) Arthus reaction
Answer is C. Ans. is 'c' i.e., Casoni's test(Ref: Chatterjee Parasitology, 12th/e, p. 127)* Casoni's test is type I hypersensitivity.* Arthus reaction is type III hypersensitivity.* Lepromin test and tuberculin test are type IV hypersensitivity.