The immune system is a complex network of cells, tissues, and organs that work together to defend the body against harmful invaders, such as viruses, bacteria, fungi, and parasites. Its primary purpose is to recognize and eliminate pathogens while differentiating them from the body’s own healthy cells and tissues.  It is the body’s defense mechanism, and functions to protect the body from infection and diseases by identifying and neutralizing foreign substances.  The Immune system plays a vital role in maintaining the body’s internal environment in a state of  homeostasis, ensuring a state of balance and stability.  The immune system also helps in the healing process by eradicating damaged cells and initiating tissue repair after illness and injury.  It also continuously monitors the body for abnormal or mutated cells that could potentially lead to cancer.

In this class, we will review the components of the Immune System, including its specialized cells and the innate and adaptive immunities.  We will also discuss vaccines and immunization.