This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunology, Subject name: Microbiology
Animal used to demonstrate anaphylaxis in the lab is - 
Select and explain. 
A. Rabbit, B. Adult mice, C. Monkey, D. Guinea Pig
D: Guinea Pig
Answer: D: Guinea Pig 
Explanation: Anaaphylaxis in vitro : isolated tissues, such as intestinal or uterine muscle strip from sensitised guinea pig ,held in a bath of ringer's solution will contract vigorously on addition of the specific antigen to the bath. This is known as Schultz Dale phenomenon. Reference : Anathanarayan & paniker's 9th edition, pg no: 164 <\p>