Define and explain: Innate immunity and Acquired immunity.

(N/A) Innate immunity: It is a non-specific type of defense that is present at the time of birth. It provides protection against pathogens by various barriers such as physical,physiological,cellular,and cytokine barriers. It is always available to protect the body.
Acquired immunity: It is a pathogen-specific type of immunity. It is not present from birth but develops during an individual's lifetime after exposure to a specific pathogen or through vaccination. It is characterized by memory,meaning the body remembers the specific pathogen for a faster response upon subsequent encounters.