- Tumor hypoxia
- Tumor infiltrating lymphocytes
- Tumor initiation
- Tumor lysis syndrome
- Tumor markers
- Tumor mutational burden
- Tumor necrosis factor
- Tumor necrosis factor alpha
- Tumor necrosis factor receptor
- Tumor necrosis factor superfamily
- Tumor progression
- Tumor promoter
- Tumor suppressor genes
- Tumor-associated glycoprotein
- Tumor-associated glycoprotein 72
- Tumor-induced osteomalacia
- Tumoral calcinosis
- Tumors
- Tumour heterogeneity
- Tumour-necrosis factors
- Tums
- Tunga
- Tunga penetrans
- Tungiasis
- Tungstate
- Tunica adventitia
- Tunica albuginea
- Tunica externa
- Tunica intima
- Tunica media
- Tunica vaginalis
- Tunica vasculosa lentis
- Tunicamycin
- Tunnel vision
- Tuohy needle
- Turanose
- Turbidimetry
- Turbidity
- Turbinate
- Turbinectomy
- Turcot syndrome
- Turf toe
- Turgor
- Turgor pressure
- Turicibacter
- Turmeric
- Turmerone
- Turner syndrome
- Turnover
- Turnover number
- Turns
- Turpentine
- Turpentine oil
- Tuskegee Syphilis Experiment
- Tussilago
- Tutin
- Tween 80
- Twelve-step program
- Twice Exceptional
- Twin Reversed Arterial Perfusion
- Twin anemia-polycythemia sequence
- Twin registry
- Twin study
- Twin-to-twin transfusion syndrome
- Twinrix
- Twins Early Development Study
- Twist2
- Twitching motility
- Two point discrimination
- Two-alternative forced choice
- Two-component regulatory system
- Two-dimensional chromatography
- Two-hit hypothesis
- Two-hybrid system
- Two-point discrimination
- Two-pore channels
- Tylenol
- Tymovirales
- Tymoviridae
- Tympanic cavity
- Tympanic membrane
- Tympanic nerve
- Tympanometry
- Tympanoplasty
- Tympanosclerosis
- Tympanum
- Tympany
- Tyndall effect
- Type 1
- Type 1 diabetes
- Type 1 diabetes mellitus
- Type 2 diabetes
- Type 2 inflammation
- Type 3 innate lymphoid cells
- Type 3c diabetes
- Type D personality
- Type I
- Type I collagen
- Type I hypersensitivity
- Type I interferon
- Type I keratin
- Type II
- Type II collagen
- Type II hypersensitivity
- Type III
- Type III error
- Type III hypersensitivity
- Type III secretion system
- Type IV
- Type IV collagen
- Type IV hypersensitivity
- Type IV secretion system
- Type V collagen
- Type VII secretion system
- Type-V collagen
- Typhidot
- Typhlitis
- Typhoid fever
- Typhus
- Typical antipsychotics
- Typology
- Tyramine
- Tyrocidine
- Tyrode's solution
- Tyrosinase
- Tyrosine
- Tyrosine aminotransferase
- Tyrosine ammonia lyase
- Tyrosine ammonia-lyase
- Tyrosine decarboxylase
- Tyrosine hydroxylase
- Tyrosine hydroxylase deficiency
- Tyrosine kinase 2
- Tyrosine kinase inhibitors
- Tyrosine kinase receptors
- Tyrosine kinases
- Tyrosine phosphorylation
- Tyrosine sulfation
- Tyrosinemia
- Tyrosinemia type I
- Tyrosinemia type II
- Tyrosol
- Tyrothricin
- Tzanck smear
- Tzanck test
- U wave
- U-47700
- U-50488
- U-87 MG
- U0126