-Explain what the main function of the lymphatic system is.
- explain how lymph fluid is produced
- explain three line of defence system
- first line: physical and chemical barriers
- second line: non-specific defence
- third line: specific defence
- explain function of neutrophils, macrophages, natural killer cells, helper T, killer T, Suppressor T and Memory T cells, B cells, antibodies, plasma cells
- explain what is an autoimmune disease