Immunology is a branch of biology and medicine [1] that covers the study of immune systems [2] in all organisms.

Immunology is the study of the immune system and is a very important branch of the medical and biological sciences. The immune system protects us from infection through various lines of defence. If the immune system is not functioning as it should, it can result in disease, such as autoimmunity, allergy and cancer.

Dec 24, 2024 · immunology, the scientific study of the body’s resistance to invasion by other organisms (i.e., immunity). In a medical sense, immunology deals with the body’s system of defense against disease-causing microorganisms and with disorders in that system’s functioning.

Immunology is a leading immunology journal publishing papers on cellular and molecular immunology, and mechanistic insights into the immune system.

One of the principal functions of the human immune system is to defend against infecting and other foreign agents by distinguishing self from non-self (foreign antigens) and to marshal other protective responses from leukocytes.

Beyond structural and chemical barriers to pathogens, the immune system has two fundamental lines of defense: innate immunity and adaptive immunity. Innate immunity is the first immunological mechanism for fighting against an intruding pathogen.

Immunology is a rapidly advancing field with many specialized areas of study. The complexity with which the immune system combats infection rivals the complexity of the numerous types of microbes that can cause disease.