All articles starting with E
17,681 articles
Embry J. Kidd
Embry J. Kidd is an American jurist serving as a United States circuit judge on the Eleventh Circuit since 2025, after serving as a magistrate judge in Florida.
Embry–Riddle Aeronautical University
Embry–Riddle Aeronautical University, founded as a flight school in Cincinnati in 1926, is a private aviation and aerospace university with campuses in Daytona Beach, Florida, and Prescott, Arizona.
Embryo
Embryo: the early developmental stage of a multicellular organism; in humans from first cleavage to about nine weeks post fertilization, before the fetus stage, studied through cleavage, gastrulation, and stem cell-based embryo models.
Embryo biopsy
Embryo biopsy is a laboratory procedure in assisted reproduction in which cells are removed from an oocyte, zygote, or embryo for genetic testing before transfer.
Embryo cryopreservation
Embryo cryopreservation is a reproductive biology method that stores embryos in liquid nitrogen, keeping them viable for thawing and transfer years later in IVF and livestock breeding.
Embryo culture
Embryo culture: the IVF laboratory step of growing fertilized oocytes in incubators to the blastocyst stage (day 5-6). Covers media, pH, temperature, 5% oxygen, history from McLaren and Biggers to Louise Brown, and time-lapse evidence.
Embryo Implantation
Embryo implantation, or nidation, is the embedding of the blastocyst in the uterine endometrium via apposition, adhesion, and penetration; in humans it is interstitial, occurs in a progesterone-timed window, and fails in at least 40% of pregnancies.
Embryo rescue
Embryo rescue is a plant breeding technique that cultures an immature hybrid embryo on nutrient medium to produce a viable plant from a cross that would otherwise abort.
Embryo transfer
Embryo transfer is the final step of IVF, placing lab-created embryos into the uterus via catheter. Pioneered by Edwards and Steptoe, it produced Louise Brown in 1978; modern practice favors single, often frozen, transfers.
Embryo transfer in livestock
Embryo transfer in livestock is a reproductive technology in which embryos from a valuable donor female are carried by recipient females, widely used in cattle since the 1970s.
Embryoid body
Embryoid body (EB): a 3D suspension aggregate of pluripotent stem cells, from ESCs or iPSCs, induced to differentiate into all three germ layers; used in directed differentiation, pluripotency testing, and embryo modeling.
Embryology
Embryology: the biological science of embryo formation and development, from Aristotle's chick studies and Pander's germ layers to human gastrulation, the 14-day research rule, and stem-cell embryo models.
Embryonal carcinoma
Embryonal carcinoma, a non-seminomatous malignant germ cell tumor of testis, ovary, or extragonadal sites, marked by primitive epithelial cells, high mitotic activity, AFP and hCG secretion, and GCNIS-derived classification.
Embryonal tumor with multilayered rosettes
Embryonal tumor with multilayered rosettes (ETMR), formerly ETANTR, ependymoblastoma, or medulloepithelioma, is a WHO grade IV infant brain tumor defined by C19MC amplification (~90%), TTYH1-C19MC fusion, LIN28A expression, or rare DICER1 mutations, with survival below 30% at 5 years.
Embryonic cell (metazoa)
Embryonic cell (metazoa), Cell Ontology CL_0002321, is any cell of the animal embryo. Early blastomeres are totipotent; ICM and epiblast cells are pluripotent, giving rise to embryonic stem cells.
Embryonic cyst of cervix
Embryonic cyst of cervix (ICD-11 LB43.0; ICD-10-CM Q51.6), a congenital cervical cyst from persistent embryonic cell clusters or Wolffian duct remnants, distinguished from acquired nabothian cysts.
Embryonic Development
Embryonic development (embryogenesis): the process from fertilized zygote to embryo, covering preimplantation stages, human weeks 1-8 (Carnegie stages 1-23), comparative mammalian embryology, and modern embryo models.
Embryonic fibroblast
An embryonic fibroblast is a fibroblast, a connective-tissue cell that produces extracellular matrix, that is part of an embryo; mouse embryonic fibroblasts are widely used as feeder layers for stem-cell culture.
Embryonic stem cell
Embryonic stem cells (ESCs) are pluripotent cells from the blastocyst inner cell mass, self-renewing and able to form all three germ layers; first isolated in mouse (1981) and human (1998, Thomson), they underpin disease modeling, drug screening, and regenerative medicine, with iPSCs as the embryo-free alternative.
Embryophyte
Embryophytes (Embryophyta), or land plants, are green plants retaining a multicellular embryo, with alternation of generations between gametophyte and sporophyte; they arose from streptophyte algae around 480-500 Ma and include mosses through flowering plants.
EmbryoScope
EmbryoScope is an IVF incubator with an integrated time-lapse camera that images embryos every 10 minutes during culture, letting embryologists assess development without opening the incubator.
Embryotoxicity
Embryotoxicity is the capacity of a chemical, physical, or biological agent to harm the embryo without malformation, causing embryonic death, growth retardation, or disturbed function.
EMBT
The EMBT (European Main Battle Tank) is a Franco-German main battle tank technology demonstrator by KNDS, first shown at Eurosatory in 2018 as a KMW and Nexter joint project.
Embu
Embu County, a county of Kenya on the southeastern slopes of Mount Kenya, capital Embu town; population 608,599 (2019), agriculture-based economy, four constituencies, led by Governor Cecily Mbarire.
Embu das Artes
Embu das Artes (formerly Embu), a municipality in the São Paulo Metropolitan Region about 27 km from the capital, known for its 1969 Arts and Crafts Fair, colonial Jesuit historic center, Estância Turística status, and 260,113 estimated residents (2026).
Embulk
Embulk is an open-source, plugin-based parallel bulk data loader for databases, storages, file formats, and cloud services, released in 2015 by Sadayuki Furuhashi (Sada) of Treasure Data; latest release v0.11.5 (2024), Apache-2.0 licensed, now in maintenance mode (2025).
EMC 1800 hp B-B
The EMC 1800 hp B-B was a class of five experimental passenger diesel-electric locomotives built by Electro-Motive Corporation in 1935; B&O No. 50, the only survivor, ran the Royal Blue and is preserved in St. Louis.
EMC Corporation
EMC Corporation was an American data storage company founded in Massachusetts in 1979 by Richard Egan and Roger Marino, acquired by Dell in 2016 for $67 billion.
EMC effect
The EMC effect is the observation that nucleons bound in atomic nuclei show suppressed quark structure functions compared with free ones, first seen by the European Muon Collaboration at CERN in iron.
Emcor
Emcor, formally EMCOR Group, is a Fortune 500 American construction and facilities services company headquartered in Norwalk, Connecticut, providing mechanical and electrical construction, building services, and data center work.