What Causes a Weak Immune System?

What are “pathogens” and how does our immune system deal with immune system The immune system's job is to protect the body from infection It recognises 'invaders' such as bacteria, viruses and fungi and abnormal cells like cancer cells respiratory system The immune system is a network of biological systems that protects an organism from diseases It detects and responds to a wide variety of pathogens,

operating system Actions for this page Listen; Print The immune system helps our body fight infection White blood cells, lymphocytes and antibodies form part of the defence