What is the immune system?
1 Answer
The immune system is a host defence system comprising many biological structures and processes within an organism that protects against disease.
Explanation:
To function properly the immune system must detect a wide variety of pathogens. Multiple defense mechanisms have evolved to recognise and neutralise pathogens.
Even simple unicellular organisms such as bacteria posses a rudimentary immune system, in the form of enzymes that protect against bacteriophage infections.
Humans have a sophisticated defense mechanism . Adaptive or acquired immunity creates immunological response to a specific pathogen, leading to an enhanced response to subsequent encounters.
Disorders of the immune system can result in auto immune disease, inflammatory diseases and cancer.
