Innate immunity can be differentiated based on the various types of barriers to microbial infections.
The innate immune system is that which is present since birth and acts as the first line of defense that a host possesses. It is a nonspecific response against the foreign invader. It requires many effector mechanisms to function.
This type of immunity can be divided into different types based on the type of barriers:
Depending upon the barriers that provide defense against microbial infections, there are several barriers that provide innate immunity. These include: