| PMNC | percentage of multinucleated cells; peripheral blood mononuclear cell |
|---|---|
| PRBC | packed red blood cells; placental residual blood volume |
| PRC | packed red cells; peer review committee; phase response curve; plasma renin concentration; professio... |
| RTG-2 | rainbow trout gonadal tissue cells |
| SEGNE | secretory granules of neural and endocrine [cells] |
| T helper cells | A subset of lymphocytes that secrete various cytokines that regulate the immune response. (05 Mar 2000) |
|---|---|
| Tm cells | T helper cells that have an Fc receptor for immunoglobulin M molecules. (05 Mar 2000) |
| endocrine cells of gut | Cells found throughout the lining of the gastrointestinal tract that contain regulatory peptide hormones and/or biogenic amines. The substances are located in secretory granules and act in an endocrine or paracrine manner. Some of these substances are also found in neurons in the gut. There are at least 15 different types of endocrine cells of the gut. Some take up amine precursors and have been called apud cells. However, most endocrine cells of the gut apparently have endodermal rather than neuroectodermal origin, so the relationship with apud cells is not clear. (12 Dec 1998) |
| endodermal cells | Embryonic cell's forming the yolk sac and giving rise to the epithelium of the alimentary and respiratory tracts and to the parenchyma of associated glands. Synonym: entodermal cells. (05 Mar 2000) |
| enterochromaffin cells | Group of basal granular cells of the gut whose granules stain readily with silver and chromium salts. The cells secrete serotonin, substance p, and enkephalins. There are three types: gastric (antral mucosa), duodenal, and intestinal. (12 Dec 1998) |
| enterochromaffin-like cells | Irregular-shaped argyrophilic cells which produce histamine, chromogranin a/pancreastatin, and an as yet unidentified peptide hormone. They are the predominant endocrine cell type of the oxyntic (acid-producing) mucosa of the stomach. Ecl cells respond to gastrin by releasing their secretory products and this source of histamine acts as the positive paracrine stimulator of the release of hydrochloric acid from the parietal cell. (12 Dec 1998) |
| enteroendocrine cells | Cell's with granules that may be either argentaffinic or argyrophilic; the cell's, scattered throughout the digestive tract, are of several varieties and are believed to produce at least 20 different gastrointestinal hormones and neurotransmitters. Synonym: enterochromaffin cells, Kulchitsky cells. (05 Mar 2000) |
| entodermal cells | Embryonic cell's forming the yolk sac and giving rise to the epithelium of the alimentary and respiratory tracts and to the parenchyma of associated glands. Synonym: entodermal cells. (05 Mar 2000) |
| epithelial cells | Cells that cover the surface of the body and line its cavities. (12 Dec 1998) |
| epithelioid cells | Characteristic cells of granulomatous hypersensitivity. They appear as large, flattened cells with increased endoplasmic reticulum. They are believed to be activated macrophages that have differentiated as a result of prolonged antigenic stimulation. Further differentiation or fusion of epithelioid cells is thought to produce multinucleated giant cells (giant cells). (12 Dec 1998) |
| erythroid progenitor cells | Committed, erythroid stem cells derived from myeloid stem cells. The progenitor cells develop in two phases: erythroid burst-forming units (bfu-e) followed by erythroid colony-forming units (cfu-e). Bfu-e differentiate into cfu-e on stimulation by erythropoietin, and then further differentiate into erythroblasts when stimulated by other factors. (12 Dec 1998) |
| tubal air cells | Occasional small air cells in the inferior wall of the auditory tube, near the tympanic orifice, communicating with the tympanic cavity. Synonym: cellulae pneumaticae tubae auditivae, air cells of auditory tube. (05 Mar 2000) |
| ethmoid air cells | The numerous small air-filled cells of the ethmoidal labyrinth. See: anterior ethmoidal air cells, middle ethmoidal air cells, posterior ethmoidal air cells. Synonym: cellulae ethmoidales, sinus ethmoidales, ethmoidal cells. (05 Mar 2000) |
| ethmoidal cells | The numerous small air-filled cells of the ethmoidal labyrinth. See: anterior ethmoidal air cells, middle ethmoidal air cells, posterior ethmoidal air cells. Synonym: cellulae ethmoidales, sinus ethmoidales, ethmoidal cells. (05 Mar 2000) |
| tumour cells, cultured | Cells grown in vitro from neoplastic tissue for use in studying the proliferative and metabolic capacities of tumour cells, in predicting clinical responses to chemotherapy, in screening new antitumour agents, and in basic biological research. They include carcinoma cell lines. (12 Dec 1998) |