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Embryonic
Embryonic Undeveloped, related to the embryo.
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Embryo
The early stages of development before an organism becomes self supporting.
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Embreeville Center
The Embreeville Center is a hospital in Coatesville, Pennsylvania, United States.
Embryo
The early stages of development before an organism becomes self supporting.
Embryo biopsy
An experimental test for genetic defects in embryos before they are implanted using IVF (in vitro fertilization).
Embryo splitting
Separation of an early-stage embryo into two or more embryos with identical genetic makeup, essentially creating identical twins or higher multiples (triplets, quadruplets, etc.).
Embryo transfer
An assisted reproductive technology in which an already fertilized egg is inserted into a woman's uterus to help her get pregnant.
Embryoid bodies (EBs)
Irregularly shaped clumps of cellular structures that arise when embryonic stem cells or embryonic germ cells are cultured. Embryoid bodies usually contain tissue from all three of the germ layers: endoderm, mesoderm, and ectoderm. Embryoid bodies are not part of normal development and occur only in vitro.
Embryonal carcinoma
A malignant germ cell tumor that occurs most often in the testes and accounts for about 40% of testicular tumors. Under the microscope, these tumors may resemble tissues of early embryos. This type of tumor can grow rapidly and spread outside the testicle. Embryonal carcinoma of the ovary is rare. It usually occurs before the age of 30 and is often prepubertal.
Embryonic germ cells
Pluripotent stem cell lines that migrate, during early development, to the future gonads to form the progenitors of egg or sperm cells. The properties of EG cells are similar to those of embryonic stem cells, but may differ in the DNA methylation of some imprinted regions.
Embryonic hemoglobin
Hemoglobin E, the normal embryonic hemoglobin, the main type of hemoglobin found in the human embryo. The E stands for embryonic and also for epsilon, the chain unique to embryonic hemoglobin (which was originally known as Gower-2).
Embryonic stem cell lines
Populations of dividing cells established from embryonic stem cells and cultured in the laboratory. Within embryonic cell lines are cells that can produce more embryonic stem cells or, under conditions of differentiation, give rise to collections of cells that include most or all cell types that can be found in a postimplantation embryo, fetus, or developed organism.
Embryonic stem cells
Primitive (undifferentiated ) cultured cells from the embryo that have the potential to become a wide variety of specialized cell types, (that is, are pluripotent). They are derived from the inner cell mass of the blastocyst. Embryonic stem cells are not embryos; by themselves, they cannot produce the necessary cell types, such as trophectoderm cells, in an organized fashion so as to give rise to a complete organism.
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Exocrine glands
Glands that secrete chemicals externally, either through a tube or duct.
ECG (electrocardiograph or cardiograph)
A tracing of the electrical activities of the heart muscles by means of an electrocardiogram, which is connected to sensors placed on the body.ÿ This procedure is used to detect and monitor suspected heart disorders.
Exercise ECG
Monitoring the electrical activity of the heart muscles while the heart is under stress, usually induced by the subject walking on a treadmill.
EEG (electroencephalograph)
A tracing of the electrical activity of the brain by means of an electroencephalograph connected to the sensors placed on the scalp.ÿ In this way, certain conditions such as epilepsy, brain tumours and other diseases or injuries to the brain can be diagnosed.
EMG (electromyograph)
The recording, by means of fine needles inserted into muscles, of electrical currents generated into the muscles.ÿ This is used in the diagnosis of muscle and nerve disorders.
Embryonic
Encapsulated
Refers to a tumor that is wholly confined to a specific area, surrounded by a capsule. Localized.
Evoked potentials
The use of electrodes to measure the electrical activity of nerves. May be used as a guide during surgical removal of tumors growing around important nerves.
Extracerebral
Located outside the cerebral hemispheres.
Extradural
External (outside) to the dura mater.
Endocrinologist
A physician trained in diagnosing and treating disorders of hormone-secreting (endocrine) organs. These organs include the thyroid, parathyroid and adrenal glands, the pituitary, the pineal body and the gonads.
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