I want to write an assignment for 50 pages.i am confused in choosing a topic. i want to choose a topic which is very distinct in immunology?

50 pages: No one is going to read a 50 page manuscript. Spend some time with your professor and decide what to review before you begin writing.

Individual tumor med: Tumor immunology is a very hot topic right now. Researchers are working on developing approaches to treating cancers that involve taking a sample of a person's actual tumor and developing a vaccine just for that one patient to help them cure their own tumor . This would be expensive, but so are all the lengthy, destructive (toxic,scarring,debilitating) and painful events of fighting cancer .