Trimester
In obstetrics, one of the three divisions of three months each during pregnancy, in which different phases of fetal development take place. The first trimester is a time of basic cell differentiation. The second trimester is a period of rapid growth and maturation of body systems. A second-trimester fetus that is born prematurely may be viable, given the best hospital care possible. The third trimester marks the final stage of fetal growth, in which systems are completed, fat accumulates under the soon-to-be-born baby’s skin, and the fetus at last moves into position for birth. This trimester ends with birth.
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a compound produced by bacteria in the stomach that appears to correlate with risk of heart disease, according to preliminary studies. TMAO is produced in the body from egg yolks and red meat. Researchers believe that it affects the body’s metabolism of cholesterol, leading to enhanced development of plaque on blood vessel walls, and can […]
- Trimethylaminuria (TMA)
An inborn error of metabolism associated with an offensive body odor, the smell of rotting fish, due to the excessive excretion of TMA in urine, sweat, and breath. Persons with TMA may experience tachycardia (fast heart rate) and severe hypertension (high blood pressure) after eating cheese (which contains tyramine) and after using nasal sprays containing […]
- Trinucleotide
A sequence of 3 base pairs; a triplet of bases. The gene code is made up of trinucleotides.
- Trip
Street name for alpha-ethyltryptamine and for LSD.
- Tripeptide
A peptide consisting of three amino acids.