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U (uracil) U.S. National Library of Medicine (NLM) UA UAA UAG UAL Ubidecarenone Ubiquinone Ubiquitin Ubiquitination Ubiquitous UBT UDP-glucuronosyltransferase UGA UL Ulcer Ulcer, aphthous Ulcer, Buruli Ulcer, duodenal Ulcer, esophageal Ulcer, gastric Ulcer, peptic Ulcer, stasis Ulceration Ulcerative colitis Ulcerative Colitis Ulcerative gingivitis Ulcerative proctitis Ullrich congenital muscular dystrophy Ulna Ulnar Ulnar nerve Ulocarcinoma Ultrafast CT Ultrasonic-assisted liposuction Ultrasound Ultrasound Ultrasound during pregnancy Ultrasound, Doppler Ultrasound, endoscopic Ultrasound, transvaginal Ultrasound/Ultrasonography Ultraviolet A Ultraviolet B Ultraviolet C Ultraviolet radiation Umami Umbilical cord Umbilicus UMP

Unassisted childbirth Uncertainty Unconscious Unconsciousness, temporary Under the weather Underload syndrome Underventilation Underwater weighing Undifferentiated cancer Undulant fever Undulatant Undulate UNESCO Unguis incarnatus Unicellular Unicornuate Unilateral Uniparous Unique identifier reporting Unit, international (IU) United Network for Organ Sharing (UNOS) United States Pharmacopeia United States Public Health Service Universal colitis Universal donor UNOS Unresectable Unresolved grief Unsaturated fat Unstable diabetes Unsteadiness Unwell Up-regulation Upper GI Series Upper GI series Upper leg Upper motor neuron Upper respiratory infection Upregulation Urachus Uracil (U) Uranium Urate Urban typhus of Malaya Urea Urea Breath Test Urea breath test (UBT) Ureaplasma Uremia Ureter

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