EP ToxicityA test defined by the federal Environmental Protection Agency to check a substance for the presence of arsenic, barium, cadmium, chromium, lead, mercury…
EP-2101A substance that is being studied as a treatment for cancer. It belongs to the family of drugs called cancer vaccines.
ependyma(eh-PEN-dih-muh) A thin membrane that lines the fluid-filled spaces in the brain and spinal cord.
ependymal cell(eh-PEN-dih-mul SEL) A cell that forms the lining of the fluid-filled spaces in the brain and spinal cord. It is a type of glial cell.
ependymal tumor(eh-PEN-dih-mul TOO-mer) A type of brain tumor that begins in cells lining the spinal cord central canal (fluid-filled space down the center) or the…
ependymoma(eh-PEN-dih-MOH-muh) A type of brain tumor that begins in cells lining the spinal cord central canal (fluid-filled space down the center) or the…
ephedra(eh-FEH-druh) A shrub native to China and India. The stems and roots are used in traditional medicine as a diuretic and for asthma, bronchitis, and cough.
Ephemeral allotmentA BLM grazing allotment in areas of the Hot Desert Biome (Region) that do not consistently produce enough forage to sustain a livestock operation, but…
Ephemeral creekA creek or stream that flows briefly only in direct response to precipitation and whose channel is above the water table. See intermittent stream.
Ephemeral KeysShort-lived cryptographic keys that are statistically unique to each execution of a key establishment process and meets other requirements of the key type…
Ephemeral streamA stream that flows only after a storm or during snowmelt and whose channel is, at all times, above the water table; groundwater is not a source of water…
ephemerisA electronic or hard-copy table or listing of the predicted positions of astronomical bodies such as the planets or the Moon; and by extension, the…
Ephemeris/ Ephemerides(1) A table showing the positions of an object in space at regular intervals of time.
EpiblastGives rise to the ectoderm and mesoderm. The mesoderm then displaces the hypoblast cells and forms the entodermal cell layer on its inner surface.
EpicenterFocal point on the earth's surface directly above the origin of a seismic disturbance.
epicotylThe upper portion of the axis of a plant embryo or seedling, above the cotyledons.
EpidemicA disease that occurs clearly in excess of normal expectation and spreads rapidly through a demographic segment of the human population.
Epidemiologic ProfileA description of the current status, distribution, and impact of an infectious disease or other health-related condition in a specified geographic area.
epidemiologist(EH-pih-DEE-mee-AH-loh-jist) A scientist who studies the patterns, causes, and control of disease in groups of people.
Epidemiology(EH-pih-dee-mee-AH-loh-jee) The study of the patterns, causes, and control of disease in groups of people.
Epidermal growth factor (EGF)A cell messenger protein that has effects including stimulation of epidermal development, in newborn animals it hastens eyelid-opening and tooth-eruption
epidermal growth factor receptor(eh-pih-DER-mul grohth FAK-ter reh-SEP-ter) The protein found on the surface of some cells and to which epidermal growth factor binds, causing the cells…
epidermis(ep-i-DER-mis) The upper or outer layer of the two main layers of tissue that make up the skin.
epidermoid carcinoma(EH-pih-DUR-moyd KAR-sih-NOH-muh) Cancer that begins in squamous cells (thin, flat cells that look like fish scales).
epidermolysis bullosa(EP-ih-der-MOLE-uh-sis bul-OH-suh) A group of chronic skin disorders in which fluid-filled blisters form on the skin and mucosa (the moist, inner lining…
epididymis(eh-pih-DIH-dih-mis) A narrow, tightly-coiled tube that is attached to each of the testicles (the male sex glands that produce sperm).
epiduralHaving to do with the space between the wall of the spinal canal and the covering of the spinal cord. An epidural injection is given into this space.
epidural blockAn injection of an anesthetic drug into the space between the wall of the spinal canal and the covering of the spinal cord.
epigastricHaving to do with the upper middle area of the abdomen.
epigenesisDescribes the developmental process whereby each successive stage of normal development is built up on the foundations created by the preceding stages of…
epigenetic variationNon-hereditary and reversible variation; often the result of a change in gene expression due to methylation of DNA.
epiglottis(ep-ih-GLAH-tis) The flap that covers the trachea during swallowing so that food does not enter the lungs.
epilepsyA group of disorders marked by problems in the normal functioning of the brain.
epinastyA process by which the growth of branches or petioles is abnormally pointing downward.
epinephrineA hormone and neurotransmitter. Also called adrenaline.
epiphyteA plant that grows upon another plant, but is neither parasitic on it nor rooted in the ground.
epipodophyllotoxin(EH-pih-POH-doh-FIH-loh-TOK-sin) A substance being studied in the treatment of some types of cancer.
epirubicin(EP-ih-ROO-bih-sin) A drug used together with other drugs to treat early breast cancer that has spread to lymph nodes.
epirubicin hydrochloride(EP-ih-ROO-bih-sin HY-droh-KLOR-ide) A drug used together with other drugs to treat early breast cancer that has spread to lymph nodes.
episomeA genetic extrachromosomal element (e.g. the F factor in Escherichia coli) which replicates within a cell independently of the chromosome and is able to…
EpistasisInteraction between genes at different loci, e.g. one gene suppresses the effect of another gene that is situated at a different locus.
Epitaxial GrowthIn reference to solar photovoltaic devices, the growth of one crystal on the surface of another crystal.
epithelial(ep-ih-THEE-lee-ul) Refers to the cells that line the internal and external surfaces of the body.
epithelial carcinoma(ep-ih-THEE-lee-ul KAR-sih-NOH-muh) Cancer that begins in the cells that line an organ.
epithelial ovarian cancer(eh-pih-THEE-lee-ul oh-VAYR-ee-un KAN-ser) Cancer that occurs in the cells on the surface of the ovary. Also called ovarian epithelial cancer.
Epithelium(EP-ih-THEE-lee-um) A thin layer of tissue that covers organs, glands, and other structures within the body.
epitope(EP-i-tope) A part of a molecule that an antibody will recognize and bind to.
EPITSEssential Program Information Technology and Systems.
epizooticA disease simultaneously affecting a large number of animals.
EPO906A substance that is being studied as a treatment for cancer. It belongs to the family of drugs called epothilones. Also called epothilone B.
epochThe date from which time is measured. For most Unix environments, the epoch is January 1, 1970.
epoch dateA date in history, chosen as the reference date from which time is measured. Note 1: An example of an epoch date is the beginning instant of January 1…
epoetin alfa(ee-POH-eh-tin AL-fuh) A substance that is made in the laboratory and stimulates the bone marrow to make red blood cells.
epoetin beta(ee-POH-eh-tin BAY-tuh) A substance that is made in the laboratory and stimulates the bone marrow to make red blood cells.
epothilone(eh-POTH-ih-lone) A substance obtained from bacteria that interferes with cell division. Some epothilones are being studied as treatments for cancer.
epothilone B(eh-POTH-ih-lone ...) A substance being studied in the treatment of cancer. It is a type of epothilone. Also called EPO906.
epothilone D(eh-POTH-ih-lone ...) A substance being studied in the treatment of cancer. It is a type of mitotic inhibitor and epothilone. Also called KOS-862.
epothilone ZK219477(eh-POTH-ih-lone ...) A form of the substance epothilone that is made in the laboratory. It is being studied in the treatment of some types of cancer.
EPP (Enhanced Parallel Port)Also known as Fast Mode Parallel Port. A new, industry standard parallel port, having higher transfer times competitive with SCSI.
epratuzumabA substance that is being studied as a treatment for cancer. It belongs to the family of drugs called radiolabeled monoclonal antibodies.
EPSP synthaseAbbreviation for enolpyruvyl-shikimate 3-phosphate synthase.
EPSPSAbbreviation for enolpyruvyl-shikimate 3-phosphate synthase.
Epstein-Barr virus(ep-stine-BAR VY-rus) A common virus that remains dormant in most people. It causes infectious mononucleosis and has been associated with certain cancers…