4E, four-plus edema.

E coli, Escherichia coli.

E&A, evaluate and advise.

E*, lesion on the erythrocyte cell membrane at the site of complement fixation.

E, air dose.

?, average beta energy.

e, base of natural logarithms, approximately 2.7182818285; egg transfer; ejection; electric charge; electron; elementary charge; exchange.

E, cortisone (compound E).

E, each.

E, eating.

E, edema.

E, elastance.

E, electric charge.

E, electric field vector.

E, electrode potential.

E, electromotive force.

E, electron.

E, embyro.

E, emmetropia.

E, encephalitis.

E, endangered (animal).

E, endogenous.

E, endoplasm.

E, enema.

E, energy.

E, Entamoeba.

E, enterococcus.

E, enzyme.

E, eosinophil.

E, epicondyle.

E, epinephrine.

E, error.

E, erythrocyte.

E, erythroid.

E, erythromycin.

E, Escherichia.

E, esophagus.

E, ester.

E, estradiol.

E, ethanol.

E, ethyl.

E, examination.

E, exhalation.

E, expectancy (wave).

E, expected frequency in a cell of a contingency table.

E, experiment, experimenter.

E, expiration.

E, expired air.

E, exposure.

E, extract, extracted, extraction.

E, extraction fraction.

E, extralymphatic.

E, eye.

E, glutamic acid.

E, internal energy.

E, involvement of a single extranodal site (in Hodgkin lymphoma).

E, kinetic energy.

E, mathematical expectation.

e^, negative electron.

E, redox potential.

E, stereodescriptor to indicate the configuration at a double bond (Ger. entgegen opposite).

E, unit (Ger. Einheit)..

E/A, emergency admission.

E/G ratio, ratio of erythroid to granulocytic precursors.

e⁺, positron.

E₀, electric affinity.

E⁰, standard electrode potential.

E₁, estrone.

E₂, 17-estradiol.

E₃, estriol.

E₄, estetrol.

ea, each.

EA, early antigen (in EBV-IM).

EA, educational age.

EA, egg albumin.

EA, electric affinity.

EA, electrical activity.

EA, electroacupuncture.

EA, electroanes thesia.

EA, electropbysiological abnormality.

EA, embryonic antibody.

EA, endocardio graphic amplifier.

EA, Endometriosis Association.

EA, endurance athletes.

EA, enteral alimentation.

EA, entero anastomosis.

EA, enzymatically active.

EA, epiandrosterone.

EA, erythrocyte antibody.

EA, erythrocyte antiserum.

EA, esophageal atresia.

EA, estivo-autumnal.

EA, ethacrynic acid..

Ea, kinetic energy of alpha particles.

EAA, electroacupuncture analgesia.

EAA, Epilepsy Association of America.

EAA, essential amino acid.

EAA, ex trinsic allergic alveolitis.

EAA, excitatory amino acid.

EAAC, excitatory amino acid carrier.

EAB, elective abortion; Ethics Advisory Board.

EABV, effective arterial blood volume.

EAC, Ehrlich ascites carcinoma.

EAC, electroacupuncture.

EAC, epithelioma adenoides cysticum.

EAC, erythema annulare centrifugum.

EAC, erythrocyte, antibody, complement.

EAC, external auditory canal.

EACA, epsilon-aminocaproic acid.

EACD, eczematous allergic contact dermatitis.

EACH, essential access community hospital.

EACs, endocrine-active chemicals.

EAD, early afterdepolarization; extracranial arterial disease.

EA-D, early antigen, diffuse.

E-ADD, epileptic attentional deficit disorder.

EADS, early amnion deficit spectrum or syndrome.

EAE, experimental allergic encephalomyelitis; experimental autoimmune encephalitis.

EAN, experimental allergic (autoimmune) neuritis).

EAS, emergent abdominal sonography.

EB, epidermolysis bulosa.

EBA, epidermolysis bullosa acquisita.

EBCT, electron-beam computed tomography.

EBER, early EBV mRNA.

EBL, enzootic bovine leucosis.

EBL, estimated blood loss.

EBM, evidence-based medicine.

EBN, Endemic Balkan nephropathy.

EBNA, Epstein-Barr nuclear antigen.

EBV, Epstein-Barr virus.

EBV-IM, Epstein-BArr virus infectious mononucleosis.

EC, Enzyme Commission of the International Union of Biochemistry.

Eca 109, human esophageal epithelial cancer cell line.

ECA, Echocontrast agents.

ECA, ecternal/extracranial carotid artery.

ECA, electrical control activity.

ECA, endometrial cryoablation.

ECA, enterobacterial common antigen.

ECA, Epidemiological Catchment Area.

Eca, Erwinia carotovora subsp. atroseptica (a phytopathogen).

ECA, external carotid artery.

ECA, extra-cardiac structural or karyotypic anomalies.

ECBO virus, enteric cytopathogenic bovine orphan virus.

ECC, early childhood caries.

ECC, endocervical cell collector.

ECC, extracorporeal circulation.

ECCE, extracapsular cataract extraction.

ECF, extended care facility.

ECF, extracellular fluid.

ECFV, extracellular fluid volume.

ECG, electrocardiogram (also EKG).

ECH, enoyl CoA hydratase.

ECHO, echocardiogram.

ECM, extracellular matrix.

ECMO, extracorporeal membrane oxygenation.

ECOMOG, Economic Community of West African Monitoring Group.

EcoRI, restriction enzyme from Escherichia coli RY 13.

ECOWAS, Economic Community of West African States.

ECRB, extensor carpi radialis brevis.

ECRL, extensor carpi radialis longus.

ECT, electroconvulsive therapy.

ECTR, endoscopic carpal tunnel release.

ECU, extensor carpi ulnaris.

ECWSs, endoluminal colonic wall stents.

ED, edema.

ED, emergency department.

ED, extradomain (the type III unit of fibronectin).

EDA, Excess Defense Articles.

EDAC, early detection of alcohol consumption.

EDC, estimated or expected date of confinement.

EDC, extensor digitorum communis.

EDDI, Education for Development and Democracy Initiative.

EDI, electronic data interchange.

EDIR, emergency drug identification record.

EDL, extensor digitorum longus.

EDM, extensor digitis minimi.

EDMR, electrically detected magnetic resonance.

EDRF, endothelium-derived relaxing factor.

EDS, Ehlers-Danlos syndrome.

EDS, external defibrillation system.

EDSTAC, Endocrine-Disrupter Screening and Testing Advisory Committee.

EDTA, ethylenediaminetetraacetic acid.

EDV, end diastolic velocity.

EDX, electrodiagnostic.

EE, energy expenditure.

EE, ethinyl estradiol.

EEG, electroencephalogram.

EENT, ear, eye, nose and throat.

EES, Ethicon Endo-Surgery.

EEXOT, Hellenic Orthopaedic Association.

EF, (peptide) elongation factor.

EF, ectopic focus.

EF, edema factor.

EF, ejection fraction.

EF, elastic fibril.

EF, electric field.

EF, elongation factor.

EF, embryo fibroblast.

EF, embryo-fetal.

EF, emergency facility.

EF, encephalitogenic factor..

EF, endothoracic fascia.

EF, endurance factor.

EF, eosinophilic fasciitis.

EF, epithelial focus.

EF, equivalent focus.

EF, erythroblastosis fetalis.

EF, erythrocyte fragmentation.

EF, exposure factor.

EF, extended field.

EF, extrafine.

EF, extrinisic factor.

EF-2, initiation factor in the translational step of viral replication.

EFA, essential fatty acids.

EFFAS, European Foot and Ankle National Societies.

EF-G, elongation factor G.

EFS, event free survival - time from diagnosis to defined events (e.g. relapse or death).

EGA, error grid analysis.

EGA, estimated gestational age.

EGCs, early gastric carcinomas.

EGD, esophagogastroduodenoscopy.

EGDS, esophagogastric devascularization with splenectomy.

EGE, eosinophilic gastroenteritis.

EGF, epidermal growth factor.

EGFP, enhanced green fluorescent protein.

EGS, ethylene glycol bis succinimidyl succinate.

EHBA, extrahepatic biliary atresia.

EHBP, extrahepatic biliary passages.

EHEC, enterohemorrhagic Escherichia Coli.

EHL, extensor hallucis longus.

EHS, European Hip Society.

EIC, endometrial intraepithelial carcinogenesis.

EIC, extensive intraductal component.

EIN3, ethylene-insensitive3 (is a transcription factor that works in the ethylene signaling pathway in Arabidopsis).

EJ, elbow jerk.

EJC, European Journal of Cancer.

EKG, electrocardiogram (also ECG).

EL, elbow.

EL, endoscopic ligation.

ELAM-1, E-selectin adhesion molecule (on endothelial cells).

ELISA, enzyme-linked immunosorbent assay.

Elix, elixir.

ELOS, estimated lenght of stay.

EM, electron microscope, emmetropia.

EMB, eosin methylene blue agar.

EMC, electromagnetic compatibility.

EMCAP, World Bank's Economic Management Capacity Project.

EMDR, Eye Movement Desensitization and Reprocessing.

EMEA, European Agency for the Evaluation of Medicinal Products.

EMG, electromyogram, electromyography.

EMH, extramedullary hematopoiesis.

EMM, epithelial malignant mesotheliomas.

EMP, Embden-Meyerhof pathway.

EMR, Electronic Medical Records.

EMS, electrical muscle stimulation.

EMS, emergency medical service.

EMST, Emergency Management of Severe Trauma.

EMT, emergency medical technician.

EMTALA, Emergency Medical Treatment and Active Labor Act.

EMUO, early morning urine osmolality (evaluating urine concentration).

End, endothelial cells.

ENG, electronystagmography.

ENI, Bureau for Europe and the New Independent States .

ENSG, European Neuroblastoma Study Group.

ENT, ear, nose, and throat.

EOA, Eastern Orthopaedic Association.

EOI, European Osteosarcoma Intergroup.

EOM, extraocular movements.

EOMI, extraocular movements intact.

Eos, eosin, eosinophil.

EP, ectopic pregnancy.

EP, emergency physician.

EP, endogenous pyrogens.

EP, European Pharmacopoeia.

EPA, Environmental Protection Agency; controls the use of pesticides and monitors water pollution in general.

EPB, extensor pollicis brevis.

EPC, egg phosphatidylcholine.

EPDM, ethylene propylene diene rubber.

EPEC, enteropathogenic Escherichia coli.

EPI, epinephrine.

Epi, epithelial cells.

EPL, extensor pollicis longus.

EPOC, excess post-exercise oxygen consumption.

EPOS, European Pediatric Orthopaedic Society.

EPS, exophtalmos-producing substance.

EPS, extrapyramidal symptoms.

EPSD, Early Periodic Screening Detection.

EPSP, excitatory postsynaptic potential.

EPSPS, 5-enolpyruvylshikamate-3-phosphate synthetase.

EPU, epidermal proliferative unit.

EPV, Epstein-Barr virus.

ER, emergency room.

ER, endoplasmic reticulum.

ER, external rotation.

ER/PR, estrogen/progesterone.

ERA, electrical response activity.

ERA, estradiol receptor assay.

ERA, evoked response audiometry.

ERAD, endoplasmic-reticulum-associated degradation.

ERCP, endoscopic retrograde cholangiopancreatography.

ERE, external rotation in extension.

ERF, external rotation in flexion.

ERP, effective refractory period.

ERT, empathy response task.

ERT, endurance run test.

ERT, enzyme replacement therapy.

ERT, estrogen replacement therapy.

ERT, external radiation therapy.

Ery, erythrocytes.

ES, electrical stimulation.

ES, endoscopic sclerotherapy.

ES, enzymatic spectrometric method.

ES, enzyme-substrate complex.

ESAF, Enhanced Structural Adjustment Facility.

ESD Dus 2, a new rare allele for esterase D (ESD) described in a family from Dusseldorf.

ESD, esterase D.

ESF, Economic Support Fund.

ESI, electrospray ionization.

ESI, epidural steroid injection.

EspA, E. coli secreted protein A.

EspB, E. coli secreted protein B.

EspD, E. coli secreted protein D.

ESPD, electrosensitive protective device.

ESPD, endogenous digoxin-like substance.

ESR, electron spin resonance.

ESR, erythrocyte sedimentation rate.

ESRD, end stage renal disease.

ESRF, end stage renal failure.

ESS, endometrial stromal sarcoma.

ESSKA, European Society for Sports Medicine, Knee Surgery and Arthroscopy.

EST, electroshock therapy.

EST, estrogen sulfotransferases.

EST, expressed sequence tag.

ESWL, extracorporeal shock wave lithotripsy.

et, and.

ET, ejection time.

ET, esotropia.

ET, essential thrombocythemia.

ET, eustachian tube(s).

ET, exercise training.

ET-1, endothelin-1.

ETA, estimated time of arrival.

ETCO₂, end tidal CO₂.

ETD, estimated time of departure.

ETF, eustachian tube function.

ETI, endotracheal intubation.

Etio, etiology.

etiol., etiology

EtO, ethylene oxyde.

ETOH, ethanol - alcohol

ETS, environmental tobacco smoke.

ETT, endotracheal tube.

ETT, exercise tolerance test.

ETX, ethosuximide.

EU, European Union.

EUA, examination under anesthesia.

EU-NRLs, European Union National Reference Laboratories.

EUP, eupneic.

EUS, endoscopic ultrasound.

EVA, economic value added.

EVA, electric vacuum aspiration.

EVA, ethylene-vinylacetate.

EVAL, ethylene-vinyl alcohol.

eval., evaluation.

EVH, enabled/VASP homology.

EVH, endoscopic vein harvest.

EVH, esophageal variceal hemorrhage.

EVH, eucapnic voluntary hyperventilation.

EX, exacerbate; examination; excision.

EX, exercise.

EX, extension.

Exam, examination.

EXC, excellent; except; exchange; excision.

EXP, expand; explain.

ExT, exfoliating toxin.

EXT, extend; external; extremity

ext, external.