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Killer T cell
Killer T cell A T cell with a particular immune specificity and an endogenously produced receptor for antigen, capable of specifically killing its target cell after attachment to the target cell by this receptor. Also called cytotoxic T cell.
RELATED TERMS--------------------------------------
Cell
Fundamental structural unit of all life. The cell consists primarily of an outer plasma membrane, which separates it from the environment; the genetic material (DNA), which encodes heritable information for the maintainance of life; and the cytoplasm, a heterogeneous assemblage of ions, molecules, and fluid.
Immune
Resistant to a particular disease.
Receptor
A molecule that recognizes a unique hormone. Once that hormone is bound to the receptor, the information carried by the hormone can now exert its biological action.
Antigen
A substance which, when present in animal tissue, stimulates the production of antibodies
Cytotoxic
Capable of killing cells.
SIMILAR TERMS--------------------------------------
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Kogenate
Bayer's first recombinantly engineered drug for the treatment of hemophilia.
Keratitis
An inflammation of the cornea often caused by a virus or bacteria. Scarring and loss of vision may result.
Keratoconus
An inherited disease where the cornea becomes progressively shaped like a cone. Wearing a contact lens may slow the progression of the disease. Corneal transplant surgery may be required.
Keratoplasty
A corneal transplant.
K cell
An effector lymphocyte with Fc receptors which allow it to bind to and kill antibody-coated target cells.
Killer T cell
Kallmann's syndrome
A condition characterized by pubertal failure, inactive testicles (or ovaries), failure of the pituitary gland to secrete gonadotropic hormones, and failure of the hypothalamus to stimulate the pituitary gland, in association with absence of the sense of smell secondary to defective olfactory function in the brain.
Keloid
A ridge or lump of progressively enlarging scar tissue due to the accumulation of excessive amounts of collagen during the healing of a wound. The possibility of keloid formation is positively correlated with skin pigmentation.
Kinesis
Body movement and activity.
Kleptolagnia
Sexuoerotic gratification produced by stealing [from Greek, kleptein, to steal + lagneia, lust].
Kleptomania
Compulsive stealing, usually of objects that have symbolic significance but not intrinsic value to the thief [from Greek, kleptein, to steal + mania, madness].
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