Thalassiosira pseudonana
An ocean diatom that is a major participant in the biological pumping of carbon to ocean depths and that has potential for mitigating global climate change. The DNA of this diatom is being sequenced.
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An infant who is affected by prenatal exposure to the drug thalidomide. In 1998, thalidomide again became available to treat certain conditions, and there is concern that babies may be born with the thalidomide syndrome as they were in the 1950s and early 1960s.
- Thallium
A metallic element having the symbol Tl and the atomic number 81 and an atomic weight of about 204. Approximately 70% of thallium production is used in electronics with the remaining used in pharmaceuticals, optics, infrared detectors, and nuclear medicine. Thallium was historically used as rat poison and insecticides, however due to its nonselective toxicity, […]
- Thallium poisoning
Poisoning with the element thallium which enters the environment primarily from coal-burning and smelting. It stays in the air, water, and soil for a long time and is not broken down. It builds up in fish and shellfish. The major source of exposure to thallium for most people is eating food contaminated with thallium. Other […]
- Thallium scan
Stress exercise sestamibi scan — one exercises on a treadmill to stress the heart by making it go faster and more strongly ; or Adenosine sestamibi scan — one receives adenosine (or another medication) to similarly stress the heart. For more details, please see the entries to Stress exercise sestamibi scan and Adenosine sestamibi scan […]
- Thanatology
The study of death and dying, including the medical, psychological, and sociologic aspects of it. Each society has its own responses to death and dying. From the Greek thanatos meaning death + -logy.