Drugs Information Online
Drugs and diseases reference index

Drugs and diseases reference index
Search
EN

Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «T»:

  1. Transplant, renal Transplant, renal
    Transplant, renal: Replacement of a diseased, damaged, or missing kidney with a donor kidney. Also called a kidney transplant. Patients with end-stage renal failure are candidates for transplantation. A successful transplant frees the patient from dialysis and provides the kidney's other metabolic...
  2. Transplantation genetics Transplantation genetics
    Transplantation genetics: The field of biology and medicine relating to the genes that govern the acceptance or rejection of a transplant. The most important genes deciding the fate of a transplanted cell, tissue, or organ belong to what is termed the MHC (the major histocompatibility complex). The...
  3. Transplantation, cross-species Transplantation, cross-species
    Transplantation, cross-species: See Xenotransplantation....
  4. Transplantation, peripheral blood stem cell Transplantation, peripheral blood stem cell
    Transplantation, peripheral blood stem cell: A technique in which stem cells are obtained from a patient's blood and used in bone marrow transplantation. Stem cells are small, round cells with a squat nucleus and scant surrounding cytoplasm. Although unremarkable in appearance, stem cells can pe...
  5. Transport defect Transport defect
    Transport defect: Within the body, many molecules are able to pass across the membranes that surround cells. These molecules can accomplish this feat due to specific transport systems. These systems include special receptors on the membrane of the cell and special carrier proteins. The receptor re...
  6. Transport disease, cystine Transport disease, cystine
    Transport disease, cystine: Commonly known as cystinuria, this is an inherited (genetic) disorder of the transport of an amino acid (a building block of protein) called cystine. The result is an excess of cystine in the urine (cystinuria) and the formation of cystine stones. Cystinuria is the most c...
  7. Transporter gene Transporter gene
    Transporter gene: See: Gene, transporter....
  8. Transposition, genetics Transposition, genetics
    Transposition, genetics: The ability of genes to change position on chromosomes, a process in which a transposable element is removed from one site and inserted into a second site in the DNA. Genetic transposition was the first type of genetic instability to be discovered. This remarkable phenome...
  9. Transposon Transposon
    Transposon: A short mobile DNA sequence that can replicate and of which copies can be inserted at random sites within chromosomes. A transposon has almost identical sequences at each end and inverted repeat sequences (that run in the opposite direction). It codes for the enzyme, transposase,...
  10. Transsexual Transsexual
    Transsexual: A person who desires or has achieved transsexualism. See transsexualism....
  11. Transsexualism Transsexualism
    Transsexualism: A consistently strong desire to change one's anatomical gender. Some transsexuals were misassigned gender at birth (for example, being anatomically male but raised as female), either on purpose or due to ambiguous anatomy. Most transsexuals, however, are perfectly normal physical...
  12. Transthyretin Transthyretin
    Transthyretin: A plasma protein consisting of 127 amino acids that binds retinol and thyroxine. The gene TTR that encodes transthyretin is in chromosome region 18q11.2-q12.1. Many distinct forms of amyloidosis have been related to different point mutations in TTR. Transthyretin is also called prealb...
  13. Transudate Transudate
    Transudate: A fluid that passes through a membrane which filters out much of the protein and cellular elements to yield a watery solution. A transudate is due to increased pressure in the veins and capillaries pressure forcing fluid through the vessel walls or low levels of protein the blood serum....
  14. Transurethral resection Transurethral resection
    Transurethral resection: Surgery performed with a special instrument inserted through the urethra. Also called TUR....
  15. Transvaginal ultrasound Transvaginal ultrasound
    Transvaginal ultrasound: A technique in which sound waves are sent out by an ultrasound probe that has been inserted in the vagina. The waves go through the vaginal wall and bounce off the ovaries, and a computer uses the ultrasound echoes to create a picture (a sonogram). Transvaginal ultrasound is...