Anaphylaxis refers to the: (A) Severe reaction following  injection of protein solutions in a sensitized individual, (B) Severe reaction following primary injection of protein solutions, (C) State of immunity developed by repeated injections of any foreign substance, (D) All of the above
Answer is A. To elicit the anaphylactic reaction exposure to the allergens for the first time (priming) is necessary, the reaction can be seen on reexposure only.