This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Which of the following cytokines are elevated in endometroisis 
Select and explain. 
A. IL-4, B. IL-5, C. IL-6, D. IL-7
C: IL-6
Answer: C: IL-6 
Explanation: IL-1β, IL-6 and IL-8 are elevated in endometriosis.