268 results found

Search Results for: immune system

Immune system

Definition noun The organ system that is involved in protecting the organism from infection, infestation, and other... Read More

Antigen

Antigen Definition What is an antigen? A simple definition is that an antigen refers to any substance that triggers an... Read More

Immune response

Immune Response Definition An immune response is defined as the reaction of the body in response to the presence of a... Read More

Lymph nodes

Lymph nodes definition Lymph nodes are small, bean-shaped organs located in different parts of the body and act as... Read More

Autoimmunity

Definition noun, plural: autoimmunities A type of immunity wherein the immune response is directed against own body,... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

Symbiosis

Symbiosis Definition What is symbiosis? Symbiosis can be defined as any kind of relationship or interaction between two... Read More

Pinocytosis

Pinocytosis Definition What is pinocytosis?  Pinocytosis is the ingestion of extracellular fluids, i.e. the fluid... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define epidermis as one or more layers of cells forming the tough and... Read More

Tolerogen

Definition noun A foreign antigen that suppresses immune response, or produces immune tolerance. Supplement In comparison... Read More

Pathobiology of allergy and its most severe form, anaphylaxis

When allergy season looms, some people with serious hypersensitivity to allergens tend to be apprehensive of what may come.... Read More

Edmonton Protocol – Possible cure for Type 1 Diabetes patients

Abstract The Edmonton Protocol is only capable of treating patients with Type 1 Diabetes since they lack the appropriate... Read More

Antigenic variation

Definition noun, plural: antigenic variations (immunology) The changing of surface proteins by an infectious agent to evade... Read More

Immunomodulatory

Definition noun An immunological change, adjustment or regulation. adjective Having the ability to alter or regulate one or... Read More

Memory B cell

Definition noun, plural: memory B cells A small, long-lived B lymphocyte that was previously exposed to a particular... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Virulence

Virulence definition In biology, virulence is defined as the degree by which a pathogenic organism can cause disease.... Read More

Autoimmune disease

Definition noun, plural: autoimmune diseases A type of disease as a result of an immune response of the body against own... Read More

Vaccine

Definition noun, plural: vaccines A suspension containing live, attenuated, modified, or killed microorganisms (or their... Read More

Mononuclear phagocyte system

Definition noun A system of cells located in reticular connective tissue, and are associated primarily with phagocytosis and... Read More

Self antigen

Definition noun, plural: self antigens An exogenous antigen that is recognized as nonself by the immune system, which should... Read More

Inoculation

Inoculation Definition In Immunology, inoculation is defined as the process of introducing an antigenic substance or... Read More

Pathogenicity

Definition noun, plural: pathogenicities The capability (of a pathogenic agent) to cause disease Supplement Pathogenicity... Read More

Immunoglobulin

Definition noun, plural: immunoglobulins (1) Any of several classes of structurally related glycoproteins in the blood... Read More

Immunodeficiency

Immunodeficiency Inabillity to mount a normal immune response. Immunodeficiency can be due to a genetic disease or acquired... Read More

Antiserum

Definition noun, plural: antiserums, antisera A serum containing immunoglobulins that act against specified... Read More

Endocytosis

Endocytosis Definition What is endocytosis in biology? Endocytosis is a cellular process by which a cell internalizes any... Read More

Immunology

Immunology (Science: study) a subfield of biology that deals with the study of antigens and the immuneprocess and how humans... Read More

Autoantigen

Definition noun, plural: autoantigens An endogenous antigen that is recognized as nonself by the immune system, which should... Read More

How Celiac Disease Affects The Digestive System

Celiac disease is a condition that affects the digestive systems of many individuals all over the world, and in this... Read More

CRISPR caused gene damage? Rise and pitfall of the gene-editor

CRISPR as a gene-editing tool made a prodigious leap forward in science. In 2015, it was heralded as Science’s 2015... Read More

Macrophage

Definition noun, plural: macrophages A leukocyte whose main function is to eliminate cellular debris and foreign particles... Read More

A Symbiont Betrays Its Host

It came as a surprise to me recently to realize how much is known about the immune responses of plants and, moreover, how... Read More

Memory cell

Definition noun, plural: memory cells A long-lived immune cell that has the ability to recognize a foreign particle that it... Read More

Alloimmunity

Definition noun, plural: alloimmunities (immunology) A type of immunity that produces an immune response that is attacking... Read More

Immunogen

Definition noun, plural: immunogens Any substance that stimulates an immune response, such as production of specific... Read More

Types of Transplants

Submitted to biologyonline.com on March 7, 2009 Published by biologyonline.com on March 29, 2009   Transplants are... Read More

Aids

Aids --> <a href="https://www.biologyonline.com/dictionary/acquired-Immunodeficiency">syndrome (Science:... Read More

TCR

Definition noun (immunology) An abbreviation for T cell receptor, an antigen-recognizing receptor in the surface of T cell,... Read More

Serine

serine (Science: amino acid) Is synthesised by the body from the amino acids glycine or threonine. Its production requires... Read More