U-Plasminogen Activator use Urinary Plasminogen Activator

U1 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U1 Small Nuclear

U1 snRNP use Ribonucleoprotein, U1 Small Nuclear

U2 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U2 Small Nuclear

U2 snRNP use Ribonucleoprotein, U2 Small Nuclear

U4 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U4-U6 Small Nuclear

U4 snRNP use Ribonucleoprotein, U4-U6 Small Nuclear

U4-U6 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U4-U6 Small Nuclear

U4-U6 snRNP use Ribonucleoprotein, U4-U6 Small Nuclear

U5 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U5 Small Nuclear

U5 snRNP use Ribonucleoprotein, U5 Small Nuclear

U6 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U4-U6 Small Nuclear

U6 snRNP use Ribonucleoprotein, U4-U6 Small Nuclear

U7 Small Nuclear Ribonucleoproteins use Ribonucleoprotein, U7 Small Nuclear

U7 snRNP use Ribonucleoprotein, U7 Small Nuclear

U937 Cells

UDP use Uridine Diphosphate

UDP Acetylgalactosamine use Uridine Diphosphate N-Acetylgalactosamine

UDP Acetylglucosamine use Uridine Diphosphate N-Acetylglucosamine

UDP Acetylmuramic Acid use Uridine Diphosphate N-Acetylmuramic Acid

UDP Galactose use Uridine Diphosphate Galactose

UDP Galactose Acetylglucosamine Galactosyltransferase use N-Acetyllactosamine Synthase

UDP Galactose Epimerase use UDPglucose 4-Epimerase

UDP Galactose Pyrophosphorylase use UTP-Hexose-1-Phosphate Uridylyltransferase

UDP Glucose use Uridine Diphosphate Glucose

UDP Glucose Dehydrogenase use Uridine Diphosphate Glucose Dehydrogenase

UDP Glucose Epimerase use UDPglucose 4-Epimerase

UDP Glucose Pyrophosphorylase use UTP-Glucose-1-Phosphate Uridylyltransferase

UDP Glucuronic Acid use Uridine Diphosphate Glucuronic Acid

UDP Glucuronosyltransferase use Glucuronosyltransferase

UDP Sugars use Uridine Diphosphate Sugars

UDP Xylose use Uridine Diphosphate Xylose

UDPG use Uridine Diphosphate Glucose

UDPG Dehydrogenase use Uridine Diphosphate Glucose Dehydrogenase

UDPGA use Uridine Diphosphate Glucuronic Acid

UDPGNAc use Uridine Diphosphate N-Acetylglucosamine

UDPGal use Uridine Diphosphate Galactose

UDPgalactose 4-Epimerase use UDPglucose 4-Epimerase

UDPglucose 4-Epimerase

UDPglucose 4-Epimerase Deficiency Disease use Galactosemias

UDPglucose-Hexose-1-Phosphate Uridylyltransferase

UDPglucose-Hexose-1-Phosphate Uridylyltransferase Deficiency use Galactosemias

UMLS use Unified Medical Language System

UMP use Uridine Monophosphate

UN use United Nations

UNDP use United Nations Development Programme

UNESCO use United Nations Educational, Scientific and Cultural Organization

UNICEF use United Nations

US AID use United States Agency for International Development

US Agency for International Development use United States Agency for International Development

USAID use United States Agency for International Development

USDA use United States Department of Agriculture

USFDA use United States Food and Drug Administration

USFTC use United States Federal Trade Commission

USPHS use United States Public Health Service

USSR

UTP use Uridine Triphosphate

UTP-Glucose-1-Phosphate Uridylyltransferase

UTP-Hexose-1-Phosphate Uridylyltransferase

UTRs use Untranslated Regions

Ubiquinol-Cytochrome-c Reductase use Electron Transport Complex III

Ubiquinone

Ubiquitin

Ubiquitin C

Ubiquitin Thiolesterase

Ubiquitin-Activating Enzymes

Ubiquitin-Conjugating Enzymes

Ubiquitin-Like Proteins use Ubiquitins

Ubiquitin-Protein Ligase use Ubiquitin-Protein Ligases

Ubiquitin-Protein Ligase Complexes

Ubiquitin-Protein Ligases

Ubiquitination

Ubiquitins

Uca use Brachyura

Udder use Mammary Glands, Animal

Uganda

Ukraine

Ulcer

Ulcer, Aphthous use Stomatitis, Aphthous

Ulcer, Rodent use Carcinoma, Basal Cell

Ulex

Ulmaceae

Ulmus

Ulmus campestris

Ulna

Ulna Fractures

Ulnar Artery

Ulnar Nerve

Ulnar Nerve Compression Syndromes

Ulnar Nerve Diseases use Ulnar Neuropathies

Ulnar Neuropathies

Ultimobranchial Body

Ultracentrifugation

Ultradeformable Liposomes use Liposomes

Ultradian Cycles use Activity Cycles

Ultrafiltration

Ultrahigh Frequency Waves use Microwaves

Ultramicrotomy use Microtomy

Ultrasonic Diagnosis use Ultrasonography

Ultrasonic Endoscopy use Endosonography

Ultrasonic Imaging use Ultrasonography

Ultrasonic Lithotripsy use Lithotripsy

Ultrasonic Therapy

Ultrasonics

Ultrasonography

Ultrasonography, Color Doppler use Ultrasonography, Doppler, Color

Ultrasonography, Doppler

Ultrasonography, Doppler, Color

Ultrasonography, Doppler, Duplex

Ultrasonography, Doppler, Pulsed

Ultrasonography, Doppler, Transcranial

Ultrasonography, Duplex Doppler use Ultrasonography, Doppler, Duplex

Ultrasonography, Endoscopic use Endosonography

Ultrasonography, Fetal use Ultrasonography, Prenatal

Ultrasonography, Interventional

Ultrasonography, Intravascular use Ultrasonography, Interventional

Ultrasonography, Mammary

Ultrasonography, Prenatal

Ultrasonography, Pulsed Doppler use Ultrasonography, Doppler, Pulsed

Ultrasonography, Transcranial Doppler use Ultrasonography, Doppler, Transcranial

Ultrasound, High-Intensity Focused, Transrectal

Ultrasound, Interventional use Ultrasonography, Interventional

Ultraviolet Filters

Ultraviolet Microscopy use Microscopy, Ultraviolet

Ultraviolet Rays

Ultraviolet Spectrophotometry use Spectrophotometry, Ultraviolet

Ultraviolet Therapy

Ulva

Umbelliferae use Apiaceae

Umbelliferones

Umbellularia

Umbilical Arteries

Umbilical Cord

Umbilical Cord Blood use Fetal Blood

Umbilical Cord Blood Stem Cell Transplantation use Cord Blood Stem Cell Transplantation

Umbilical Cyst use Urachal Cyst

Umbilical Hernia use Hernia, Umbilical

Umbilical Veins

Umbilicus

Umbra use Umbridae

Umbrella Filters use Vena Cava Filters

Umbrella Tree use Araliaceae

Umbridae

Unaccompanied Child use Unaccompanied Minor

Unaccompanied Minor

Unaccounted-For Water

Unassigned Codon use Codon, Nonsense

Uncaria

Uncaria procumbens use Harpagophytum

Uncaria tomentosa use Cat's Claw

Uncertainty

Uncinaria stenocephala use Ancylostomatoidea

Uncompensated Care

Unconscious (Psychology)

Unconscious State use Unconsciousness

Unconsciousness

Uncoupling Agents

Undaria

Undecylenic Acids

Under-Developed Countries use Developing Countries

Underachievement

Underground Storage use Underground Tanks

Underground Streams use Groundwater Flow

Underground Tanks

Underlying Cause of Death

Underpopulation use Population Density

Underregistration

Understanding use Comprehension

Undertaking use Mortuary Practice

Undulant Fever use Brucellosis

Unedited Footage

Unemployment

Unicism

Unified Health System use Single Health System

Unified Medical Language System

Uniform Flow

Unilamellar Liposomes

Unilateral Hearing Loss use Hearing Loss, Unilateral

Unio

Union Lists

Union of South Africa use South Africa

Union of Soviet Socialist Republics use USSR

Unionidae

Uniparental Disomy

Uniparental Heterodisomy use Uniparental Disomy

Uniparental Isodisomy use Uniparental Disomy

Unipolar Depression use Depressive Disorder

Uniport use Ion Transport

Unit Dose Drug Distribution Systems use Medication Systems

Unit Operations

Unit Process use Unit Operations

United Arab Emirates

United Arab Republic use Egypt

United Kingdom use Great Britain

United Nations

United Nations Development Programme

United Nations Educational, Scientific and Cultural Organization

United Nations International Children's Emergency Fund use United Nations

United States

United States Agency for Health Care Policy and Research use United States Agency for Healthcare Research and Quality

United States Agency for Healthcare Research and Quality

United States Agency for International Development

United States Alcohol, Drug Abuse, and Mental Health Administration use United States Substance Abuse and Mental Health Services Administration

United States Centers for Disease Control and Prevention use Centers for Disease Control and Prevention (U.S.)

United States Centers for Medicare and Medicaid Services use Centers for Medicare and Medicaid Services (U.S.)

United States Department of Agriculture

United States Department of Health and Human Services use United States Dept. of Health and Human Services

United States Department of Health, Education, and Welfare use United States Dept. of Health and Human Services

United States Department of Homeland Security

United States Department of Veterans Affairs

United States Dept. of Health and Human Services

United States Employee Retirement Income Security Act use Employee Retirement Income Security Act

United States Environmental Protection Agency

United States Federal Trade Commission

United States Food and Drug Administration

United States Gov't Supported, N.I.H. use Research Support, U.S. Gov't, P.H.S.

United States Gov't Supported, Non-P.H.S. use Research Support, U.S. Gov't, Non-P.H.S.

United States Gov't Supported, P.H.S. use Research Support, U.S. Gov't, P.H.S.

United States Government Agencies

United States Health Care Financing Administration use Centers for Medicare and Medicaid Services (U.S.)

United States Health Insurance Portability and Accountability Act use Health Insurance Portability and Accountability Act

United States Health Resources Administration use United States Health Resources and Services Administration

United States Health Resources and Services Administration

United States Indian Health Service

United States National Academy of Sciences use National Academy of Sciences (U.S.)

United States National Aeronautics and Space Administration

United States National Center for Health Statistics use National Center for Health Statistics (U.S.)

United States National Health Insurance use National Health Insurance, United States

United States National Health Planning Information Center use National Health Planning Information Center (U.S.)

United States National Institutes of Health use National Institutes of Health (U.S.)

United States National Library of Medicine use National Library of Medicine (U.S.)

United States Occupational Safety and Health Administration

United States Office of Economic Opportunity

United States Office of National Drug Control Policy

United States Office of Research Integrity

United States Office of Technology Assessment

United States Office of the Assistant Secretary for Health Office of Research Integrity use United States Office of Research Integrity

United States Patient Self-Determination Act use Patient Self-Determination Act

United States Public Health Service

United States Social Security Administration

United States Substance Abuse and Mental Health Services Administration

United States Supreme Court use Supreme Court Decisions

United States Tax Equity and Fiscal Responsibility Act use Tax Equity and Fiscal Responsibility Act

United States Veterans Administration use United States Department of Veterans Affairs

United States Visible Human Project use Visible Human Projects

Unithiol

Units of Hemotherapy use Hemotherapy Service

Universal Access To Health Care Services

Universal Coverage

Universal Precautions

Universities

University Health Services use Student Health Services

University Medical Centers use Academic Medical Centers

Unknown Primary Tumors use Neoplasms, Unknown Primary

Unleaded Gasoline

Unna-Thost Syndrome use Keratoderma, Palmoplantar, Diffuse

Unnecessary Procedures

Unnecessary Surgery use Unnecessary Procedures

Unpublished Works

Unsafe Sex

Unsaturated Dietary Fats use Dietary Fats, Unsaturated

Unsaturated Fats use Fats, Unsaturated

Unsaturated Oils use Fats, Unsaturated

Unstable DNA Sequence use DNA Sequence, Unstable

Untranslated Regions

Unux Process Activated Sludges use Pure Oxygen Activated Sludges

Unventilated Spaces use Confined Spaces

Unverricht-Lundborg Syndrome

Up-Regulation

Upas antiaris

Upas tieute

Upflow Anaerobic Reactors

Upflow Filters

Upflow Filtration

Uphill Transport use Biological Transport, Active

Upper Aerodigestive Tract Neoplasms use Head and Neck Neoplasms

Upper Airway Resistance Sleep Apnea Syndrome use Sleep Apnea, Obstructive

Upper Esophageal Sphincter use Esophageal Sphincter, Upper

Upper Extremity

Upper Extremity Deformities, Congenital

Upper Gastrointestinal Tract

Upper Limb Deformities, Congenital use Upper Extremity Deformities, Congenital

Upper Respiratory Infections use Respiratory Tract Infections

Upper Volta use Burkina Faso

Upregulation use Up-Regulation

Upstream Stimulatory Factors

Upwelling

Urachal Cyst

Urachus

Uracil

Uracil Arabinofuranoside use Arabinofuranosyluracil

Uracil Arabinoside use Arabinofuranosyluracil

Uracil Mustard

Uracil Nucleotides

Uracil Polynucleotides use Poly U

Uracil-DNA Glycosidase

Uralenic Acid use Glycyrrhetinic Acid

Uramustine use Uracil Mustard

Uranium

Uranium (Homeopathy)

Uranium Compounds

Uranium Nitricum

Uranothorium

Uranus

Uranyl Nitrate

Urate Oxidase

Urbach-Wiethe Disease use Lipoid Proteinosis of Urbach and Wiethe

Urban Agglomeration use Agglomeration, Urban

Urban Agriculture

Urban Agriculture Networks

Urban Cleaning

Urban Cleaning Coverage

Urban Cleaning Enterprises

Urban Cleaning Equipment

Urban Cleaning Service

Urban Development use Urban Renewal

Urban Fires

Urban Health

Urban Health Services

Urban Horticulture use Urban Agriculture

Urban Hospitals use Hospitals, Urban

Urban Planning use City Planning

Urban Population

Urban Population Health use Urban Health

Urban Renewal

Urban Sanitation

Urban Settlements

Urban Villages use Urban Settlements

Urban Zones

Urban-Rural Migration use Rural-Urban Migration

Urbanization

Urea

Urea Nitrica

Urea Pura

Ureaplasma

Ureaplasma Infections

Ureaplasma parvum use Ureaplasma

Ureaplasma urealyticum

Urease

Urecholine use Bethanechol Compounds

Uremia

Ureohydrolases

Ureter

Ureteral Calculi

Ureteral Cancer use Ureteral Neoplasms

Ureteral Diseases

Ureteral Neoplasms

Ureteral Obstruction

Ureterocele

Ureterolithiasis

Ureteroscopes

Ureteroscopic Surgical Procedures use Ureteroscopy

Ureteroscopy

Ureterostomy

Urethane

Urethra

Urethral Cancer use Urethral Neoplasms

Urethral Diseases

Urethral Neoplasms

Urethral Obstruction

Urethral Stenosis use Urethral Stricture

Urethral Stricture

Urethritis

Urgencies use Emergencies

Urginea

Urginea scilla use Squilla maritima

Uric Acid

Uricase use Urate Oxidase

Uricosuric Agents

Uricum Acidum

Uridine

Uridine Diphosphate

Uridine Diphosphate Galactose

Uridine Diphosphate Glucose

Uridine Diphosphate Glucose Dehydrogenase

Uridine Diphosphate Glucose Epimerase use UDPglucose 4-Epimerase

Uridine Diphosphate Glucuronic Acid

Uridine Diphosphate N-Acetylgalactosamine

Uridine Diphosphate N-Acetylglucosamine

Uridine Diphosphate N-Acetylmuramic Acid

Uridine Diphosphate Sugars

Uridine Diphosphate Xylose

Uridine Diphospho-N-Acetylglucosamine use Uridine Diphosphate N-Acetylglucosamine

Uridine Diphosphogalactose use Uridine Diphosphate Galactose

Uridine Diphosphoglucose use Uridine Diphosphate Glucose

Uridine Diphosphoglucuronic Acid use Uridine Diphosphate Glucuronic Acid

Uridine Kinase

Uridine Monophosphate

Uridine Phosphates use Uracil Nucleotides

Uridine Phosphorylase

Uridine Pyrophosphoacetylglucosamine use Uridine Diphosphate N-Acetylglucosamine

Uridine Pyrophosphogalactose use Uridine Diphosphate Galactose

Uridine Triphosphate

Uridyl Transferase use UDPglucose-Hexose-1-Phosphate Uridylyltransferase

Uridylate 5'-Nucleotidase use 5'-Nucleotidase

Uridylic Acid use Uridine Monophosphate

Urinals use Sanitary Devices

Urinalysis

Urinary Bladder

Urinary Bladder Calculi

Urinary Bladder Diseases

Urinary Bladder Fistula

Urinary Bladder Neck Obstruction

Urinary Bladder Neoplasms

Urinary Bladder Prolapse use Cystocele

Urinary Bladder Stones use Urinary Bladder Calculi

Urinary Bladder, Neurogenic

Urinary Bladder, Overactive

Urinary Calculi

Urinary Catheterization

Urinary Diversion

Urinary Fistula

Urinary Incontinence

Urinary Incontinence, Stress

Urinary Incontinence, Urge

Urinary Kallikrein use Tissue Kallikreins

Urinary Plasminogen Activator

Urinary Reservoirs, Continent

Urinary Retention

Urinary Sphincter, Artificial

Urinary Stones use Urinary Calculi

Urinary Tract

Urinary Tract Cancer use Urologic Neoplasms

Urinary Tract Diseases use Urologic Diseases

Urinary Tract Infections

Urinary Tract Physiology

Urination

Urination Disorders

Urine

Urine Concentrating Ability use Kidney Concentrating Ability

Urinoma

Urobilin

Urobilinogen

Urocanase use Urocanate Hydratase

Urocanate Hydratase

Urocanic Acid

Urochordata

Urocortin use Urocortins

Urocortins

Urocyon use Foxes

Urodela

Urodynamics

Urofollitropin

Urogastrone use Epidermal Growth Factor

Urogastrone Receptor use Receptor, Epidermal Growth Factor

Urogenital Abnormalities

Urogenital Cancer use Urogenital Neoplasms

Urogenital Neoplasms

Urogenital Surgical Procedures

Urogenital System

Urography

Urokinase use Urinary Plasminogen Activator

Urokinase-Type Plasminogen Activator use Urinary Plasminogen Activator

Urolithiasis

Urologic Cancer use Urologic Neoplasms

Urologic Diseases

Urologic Neoplasms

Urologic Surgical Procedures

Urologic Surgical Procedures, Male

Urological Manifestations

Urology

Urology Department, Hospital

Uronic Acids

Uropepsinogen use Pepsinogen A

Uroporphyrinogen Carboxy-Lyase use Uroporphyrinogen Decarboxylase

Uroporphyrinogen Decarboxylase

Uroporphyrinogen I Synthase use Hydroxymethylbilane Synthase

Uroporphyrinogen III Cosynthetase use Uroporphyrinogen III Synthetase

Uroporphyrinogen III Synthetase

Uroporphyrinogen Isomerase use Uroporphyrinogen III Synthetase

Uroporphyrinogen-III Synthase use Uroporphyrinogen III Synthetase

Uroporphyrinogens

Uroporphyrins

Urotensins

Urothelium

Ursidae

Ursodeoxycholic Acid

Ursus use Ursidae

Urtica crenulata

Urtica dioica

Urtica gigas

Urtica urens

Urticaceae

Urticaria

Urticaria Pigmentosa

Urticaria, Giant use Angioedema

Uruguay

Urundi use Burundi

Use of Radiation in Medicine and Investigation

Use of Radiation on Energy

Use of Radiation on Industry

Use of Scientific Information for Health Decision Making

Used Oils use Lubricant Oils

Used Rubber Tires use Tires

Used Tires use Tires

User Embracement

User-Computer Interface

Uses of Epidemiology

Uses of Radiation

Usher Syndromes

Usnea

Usnea Barbata (Homeopathy)

Usnea barbata use Usnea

Ustilaginales

Ustilago

Ustilago maydis

Utah

Uterine Appendages use Adnexa Uteri

Uterine Cancer use Uterine Neoplasms

Uterine Cervical Diseases

Uterine Cervical Dysplasia

Uterine Cervical Erosion

Uterine Cervical Incompetence

Uterine Cervical Neoplasms

Uterine Cervicitis

Uterine Contraction

Uterine Diseases

Uterine Endoscopy use Hysteroscopy

Uterine Hemorrhage

Uterine Inertia

Uterine Inversion

Uterine Monitoring

Uterine Muscle use Myometrium

Uterine Neoplasms

Uterine Perforation

Uterine Prolapse

Uterine Rupture

Uterine Stimulants use Oxytocics

Uteroglobin

Uteroplacental Circulation use Placental Circulation

Uteroscopes use Hysteroscopes

Uteroverdine use Biliverdine

Uterus

Utility Failure use Interruption of Services Supply

Utilization Review

Utilization Review, Drug use Drug Utilization Review

Utilization and Quality Control Peer Review Organizations use Professional Review Organizations

Utopias

Utricle use Saccule and Utricle

Utrophin

Uukuniemi Group Viruses use Uukuniemi virus

Uukuniemi virus

Uva ursi (Homeopathy)

Uva-ursi use Arctostaphylos

Uvaria

Uvaria triloba

Uvea

Uveal Diseases

Uveal Neoplasms

Uveitis

Uveitis, Anterior

Uveitis, Intermediate

Uveitis, Posterior

Uveitis, Suppurative

Uveitis, Sympathetic use Ophthalmia, Sympathetic

Uveomeningoencephalitic Syndrome

Uveomeningoencephalitis use Uveomeningoencephalitic Syndrome

Uveoparotid Fever

Uveoparotitis use Uveoparotid Fever

Uvomorulin use Cadherins

Uvula

Uzara

Uzbek S.S.R. use Uzbekistan

Uzbekistan