Context: Immunological research continues to become more specialized, pursuing non-classical models of immunity and functions of cells, organs and systems not previously associated with the immune system (Yemeserach 2010).

Question: In the field of immunology, what aspect is becoming more specialized?
Answer: research

Question: What new areas are immunologists studying with more frequency?
Answer: non-classical models of immunity

Question: The latest research into newer aspects of immunology is focused on what three elements of the body?
Answer: cells, organs and systems

Question: These three elements of the body are of new interest for what reason?
Answer: not previously associated with the immune system