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Ectopic pregnancy
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A pregnancy that develops outside of the uterine cavity. Usually these are formed in the fallopian tube.
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Egg Collection
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The procedure by which eggs are collected from the woman's ovaries by using an ultrasound guided needle. Also known as egg retrieval.
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Embryo Freezing / Storage
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Embryos not required for treatment in a cycle can be frozen and stored for future use. Freezing is also known as cryopreservation.
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Embryo (preembryo)
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The developing individual from conception until approximately the end of the second month.
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Embryo transfer
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Replacement of pre-embryos, following in vitro fertilization (IVF), either transcervically or via cannulation of the fallopian tubes with the goal of achieving implantation and ensuing pregnancy.
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Embryologist
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A scientist who cultures and studies embryos in a clinical or research laboratory.
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Empty sac
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A pregnancy in which only the placenta, but not the fetus, has developed
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Endometrial biopsy
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Removal of a small part of the uterine lining to measure its maturity
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Endometriosis
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A disease in which normal endometrial tissue (the lining of the uterus) grows outside of the uterus.
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Endometrium
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The inner layer of the uterine wall that contains tubular uterine glands; the structure, thickness, and state of the endometrium undergo marked change with the menstrual cycle.
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Engineered cycle
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An artificial menstrual cycle in which drugs, not the ovaries, supply the hormones to prepare the uterus
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Epididymis
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Coiled tubing outside the testicles which store sperm.
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Estradiol (E2)
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The potent form of the female hormone, estrogen, which is produced by granulosa cells of the ovary. The follicle is seen to increase in fluid content and therefore increase in diameter during treatment with gonadotropins.
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Estrogen
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A female hormone produced mainly by the ovaries from puberty to menopause which is responsible for thickening the uterine lining during the first half of the menstrual cycle in preparation for ovulation and possible pregnancy.
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Excess embryos
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Embryos remaining after embryo replacement in an IVF cycle
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