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Tests
The determination of the ratio of T-lymphocytes helper 9 sub-population to T-lymphocytes helper 9 present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The measurement of the number of helper T lymphocytes, which are T lymphocytes that express CD4, in a cubic millimeter of blood. It is calculated by multiplying 1000 by both the total leukocyte count and the percent of helper T cells in the differential leukocyte count.
Tests
The measurement of the ratio of activated T-lymphocytes expressing CD4 to the total number of T-lymphocytes in a sample expressed as a percent value.
Tests
The determination of the number of helper alpha-beta T-lymphocytes in a sample.
Tests
A CD4 count is a blood test that measures the number of CD4 cells in a sample of your blood. CD4 cells are a type of white blood cell that circulates throughout the body in the blood. They're also called CD4 T lymphocytes or "helper T cells." That's because they help fight infection by triggering your immune system to destroy viruses, bacteria, and other germs that may make you sick.
Tests
The determination of the number of a subpopulation of helper central memory T-lymphocytes in a sample.
Tests
The determination of the ratio of T-lymphocytes helper central memory sub-population to T-lymphocytes helper central memory present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of the conventional central memory T-lymphocytes to helper T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of the conventional effector memory T-lymphocytes to helper T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Indicators
A natural cyclic polypeptide immunosuppressant isolated from the fungus Beauveria nivea. The exact mechanism of action of cyclosporine is not known but may involve binding to the cellular protein cytophilin, resulting in inhibition of the enzyme calcineurin. This agent appears to specifically and reversibly inhibit immunocompetent lymphocytes in the G0-or G1-phase of the cell cycle. T-lymphocytes are preferentially inhibited with T-helper cells as the primary target. Cyclosporine also inhibits lymphokine production and release. (NCI04)
Tests
The determination of the ratio of helper regulatory effector T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
Tests
The determination of the ratio of helper regulatory effector T-lymphocytes to T-lymphocytes present in a sample. The measurement may be expressed as a ratio or percentage.
