Biology

Biology

A natural science concerned with the study of life or living matter in all its forms and phenomena, especially in relation to their origin, growth, reproduction, structure, behaviour and evolution.

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Biology > Immunology

Fas ligand (FasL)

Biology; Immunology

A cell-surface member of the TNF family of proteins. Binding of Fas ligand to Fas triggers apoptosis in the Fas-expressing cell.

fragment, crystallizable (FC)

Biology; Immunology

Fragment of antibody without antigen-binding sites, generated by cleavage with papain; the Fc fragment contains the C-terminal domains of the domains of the immunoglobulin heavy ...

Fc receptor (FcR)

Biology; Immunology

A receptor on a cell surface with specific binding affinity for the Fc portion of an antibody molecule. Fc receptors are found on many types of cells.

Fcε receptor (FcεR)

Biology; Immunology

A mast cell and leukocyte receptor for the Fc region of IgE. When immune complexes bind to Fcε receptors, the cell may respond by releasing the mediators of immediate ...

FK506, or tacrolimus

Biology; Immunology

is an immunosuppressive ploypeptide drug that inactivates T cells by inhibiting signal transduction from the T-cell receptor. FK506 and cyclosporin A are the most commonly used ...

fluorescein isothiocyanate (FITC)

Biology; Immunology

A fluorescent dye (a fluorchrome) which emits a yellow-green color and can be conjugated to antibody or other proteins.

fluorescence microscopy

Biology; Immunology

A microscope method which uses ultraviolet light to illuminate a tissue or cell stained with a fluorochrome-labeled substance such as an antibody against an antigen of interest in ...