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Tests
The measurement of the ratio of natural killer cells, which are leukocytes that express CD16 and CD56, to the total number of blood cells in a sample expressed as a percent value.
Tests
The determination of the ratio of the natural killer cells to leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of the natural killer cells to total cells present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of the natural killer T-lymphocytes to total T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of a sub-population of non-classical monocytes to all leukocytes that are not T-cells, B-cells, or natural killer cells, present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the number of leukocytes that are not T-cells, B-cells, or natural killer cells present in a sample.
Tests
The determination of the ratio of the leukocytes that are not T-cells, B-cells, or natural killer cells to total leukocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Glossary Term
Any natural or synthetic substance used in a chemical or biological reaction in order to produce, identify, or measure another substance.
Glossary Term
A natural compound of silicon and oxygen found mostly in sand, Silica has three main crystalline varieties: quartz, tridymite, and cristobalite. Fine particulate silica dust from quartz rock causes over a long-term progressive lung injury, silicosis. (NCI04)
Indicators
A natural macrocyclic lactone produced by the bacterium Streptomyces hygroscopicus, with immunosuppressant properties. In cells, sirolimus binds to the immunophilin FK Binding Protein-12 (FKBP-12) to generate an immunosuppressive complex that binds to and inhibits the activation of the mammalian Target Of Rapamycin (mTOR), a key regulatory kinase. This results in inhibition of T lymphocyte activation and proliferation that occurs in response to antigenic and cytokine (IL-2, IL-4, and IL-15) stimulation and inhibition of antibody production. (NCI04)
Indicators
A natural alkaloid derivative of xanthine isolated from the plants Camellia sinensis and Coffea arabica. Theophylline appears to inhibit phosphodiesterase and prostaglandin production, regulate calcium flux and intracellular calcium distribution, and antagonize adenosine. Physiologically, this agent relaxes bronchial smooth muscle, produces vasodilation (except in cerebral vessels), stimulates the CNS, stimulates cardiac muscle, induces diuresis, and increases gastric acid secretion; it may also suppress inflammation and improve contractility of the diaphragm. (NCI04)
Indicators
The least plentiful of all 22 amino acids and an essential amino acid in humans (provided by food), Tryptophan is found in most proteins and a precursor of serotonin. Tryptophan is converted to 5-hydroxy-tryptophan (5-HTP), converted in turn to serotonin, a neurotransmitter essential in regulating appetite, sleep, mood, and pain. Tryptophan is a natural sedative and present in dairy products, meats, brown rice, fish, and soybeans. (NCI04)
