Y
Yaba monkey tumor virus
Posted on July 24, 2011 |
The type species of YATAPOXVIRUS, a tumor-producing DNA virus discovered in monkeys in Yaba, Nigeria. It has been found to produce histiocytomas in monkeys and humans.
Yam
Posted on July 24, 2011 |
A plant genus best known for edible underground tubers. Yam may also refer to a moist variety of sweet potato, IPOMOEA BATATAS.
YACs (Chromosomes)
Posted on July 24, 2011 |
Chromosomes in which fragments of exogenous DNA ranging in length up to several hundred kilobase pairs have been cloned into yeast through ligation to vector sequences. These artificial chromosomes are used extensively in molecular biology for the construction of comprehensive genomic libraries of higher organisms.
YAC (Chromosome)
Posted on July 24, 2011 |
Chromosomes in which fragments of exogenous DNA ranging in length up to several hundred kilobase pairs have been cloned into yeast through ligation to vector sequences. These artificial chromosomes are used extensively in molecular biology for the construction of comprehensive genomic libraries of higher organisms.
Yaba Virus
Posted on July 24, 2011 |
The type species of YATAPOXVIRUS, a tumor-producing DNA virus discovered in monkeys in Yaba, Nigeria. It has been found to produce histiocytomas in monkeys and humans.
Yang Xu
Posted on July 24, 2011 |
In the yin-yang system of philosophy and medicine, a lack of vital energy (called yangxu in Chinese). It manifests itself in various systemic and organic diseases. (The Pinyin Chinese-English Dictionary, 1979)
Yang
Posted on July 24, 2011 |
In Chinese philosophy and religion, two principles, one negative, dark, and feminine (yin) and one positive, bright, and masculine (yang), from whose interaction all things are produced and all things are dissolved. As a concept the two polar elements referred originally to the shady and sunny sides of a valley or a hill but it developed into the relationship of any contrasting pair: those specified above (female-male, etc.) as well as cold-hot, wet-dry, weak-strong, etc. It is not a distinct system of thought by itself but permeates Chinese life and thought. A balance of yin and yang is essential to health. A deficiency of either principle can manifest as disease. (Encyclopedia Americana)
Yamogenin
Posted on July 24, 2011 |
(25R)-Spirost-5-en-3-beta-ol. A steroid sapogenin which is isolated from various plants. Can be converted to ecdysone, pregnenolone, and progesterone. : nitogenin.
Yaws
Posted on July 24, 2011 |
A systemic non-venereal infection of the tropics caused by Treponema pallidum subspecies pertenue.
Yawning
Posted on July 24, 2011 |
An involuntary deep inspiration with the mouth open, often accompanied by the act of stretching.