Adaptive immunity is the body’s specialised defence system that targets harmful foreign substances, such as bacteria, viruses and cancer cells. It is often called specific immunity, as it produces a targeted response towards specific threats.
This system takes longer to respond than our non-specific immunity (innate immunity) but provides long-lasting protection against specific threats. Adaptive immunity is usually stimulated by innate immunity.
Tumour cells can manipulate our immune system to promote the growth and development of cancer.