What Are Haptens

question 57

Multiple Choice

What are haptens?

• A) They are small molecules that only become antigens when they bind to larger molecules.
• B) They do not react with antibodies, but instead with T cells.
• C) They are the antigenic substances involved in transplant rejection.
• D) They are large protein molecules that can trigger immune responses.
• E) They trigger type III hypersensitivity.