- null cells
- lymphocytes that lack the surface markers for B or T cells; see K c's and NK c's.
Medical dictionary. 2011.
null cells
Look at other dictionaries:
Null cell — A null cell is a large granular lymphocyte without surface markers or membrane associated proteins from B lymphocytes or T lymphocytes. Natural killer cells are usually null cells with surface marker CD 16 which bind to the Fc portion of the IgG … Wikipedia
null cell — nəl n a lymphocyte in the blood that does not have on its surface the receptors typical of either mature B cells or T cells … Medical dictionary
null-cell adenoma — a pituitary adenoma whose cells give negative results on tests for staining and hormone secretion; although classically they were considered to be composed of sparsely granulated or degranulated (nonfunctioning) cells, some contain functioning… … Medical dictionary
null cell — Lymphocytes lacking typical markers of T or B cells capable of lysing a variety of tumour or virus infected cells without obvious antigenic stimulation, also effect antibody dependent cell lysis, and in humans carry CD16 marker … Dictionary of molecular biology
L cells — 1. cells from a strain (C3H) of mouse fibroblasts grown in tissue culture for many years; employed for their ability to support replication of many types of viruses. 2. a type of argyrophilic cells with large cytoplasmic granules in the mucosa of … Medical dictionary
Jurkat cells — are an immortalized line of T lymphocyte cells that are used to study acute T cell leukemia, T cell signaling, and the expression of various chemokine receptors susceptible to viral entry, particularly HIV. Jurkat cells are also useful in science … Wikipedia
chromophobe cells — chromophobic cells small, faintly staining cells with scanty cytoplasm found often in clusters in the center of the cell cords in the adenohypophysis; their cytoplasm was formerly thought to be nongranular, but the granules are now known to be… … Medical dictionary
NK cells — (= natural killer cell) See null cell … Dictionary of molecular biology
Adenoma — A benign tumor that arises in or resembles glandular tissue. If it becomes cancerous, it is called an adenocarcinoma. * * * A benign epithelial neoplasm in which the tumor cells form glands or glandlike structures; usually well circumscribed,… … Medical dictionary
Cell — The basic structural and functional unit in people and all living things. Each cell is a small container of chemicals and water wrapped in a membrane. Each cell in the human body there are 100 trillion cells in each of us contains the entire… … Medical dictionary
