23 results found

Search Results for: antigenic

Antigenic variation

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

Antigenic

Antigenic Having the properties of an antigen (allergen). Synonym: allergenic,... 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

T-helper cell

Definition noun, plural: T-helper cells A type of T lymphocyte that assists by activating antigen-presenting leukocytes,... 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

Plasma B cell

Definition noun, plural: plasma B cells A large B lymphocyte that when exposed to antigen, produce, and secrete large... Read More

Haptene

Definition noun, plural: haptenes A substance that induces immune response when bound to a carrier protein or to large... Read More

Hapten

Definition noun, plural: haptens A substance that induces immune response when bound to a carrier protein or to large... Read More

Cell wall

The cell is the structural, functional, and biological unit of all organisms. It is a membrane-bound structure containing... Read More

Plasmablast

Definition noun, plural: plasmablasts An antibody-producing stem cell that could give rise to another of its kind or... Read More

Null cell

null cell lymphocytes lacking typical markers of T or b-cells capable of lysing a variety of tumour or virus infected cells... Read More

Epitope

Epitope (Science: immunology) That part of an antigenic molecule to which the t-cell receptor responds, a site on a large... Read More

Valence

Definition noun, plural: valences (biology, immunology) The relative capability of a substance (e.g. antibody) to act... Read More

Rosette formation

rosette formation The in vitro formation of clusters consisting of a cell (usually a lymphocyte) surrounded by antigenic... Read More

Antiserum

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

Inoculation

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

Erythrogenic toxin

Erythrogenic toxin (Science: protein) toxin produced by strains of streptococcus pyogenes responsible for scarlet fever.... Read More

Streptolysin O

Definition noun An oxygen-labile, immunogenic hemolysin produced by or derived from some strains of... Read More

Streptolysin S

Definition noun A nonantigenic, oxygen-stable β-hemolytic enzyme produced by some bacteria, especially... Read More

Avidity

Definition noun, plural: avidities The combined strength of bond affinities in a complex. Usage The term may be used in... Read More

Eubacteria

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

Endocytosis

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