|
Yogurt
|
D015014 |
[A slightly acid milk food produced by fermentation due to the combined action of Lactobacillus acidophilus and Streptococcus thermophilus.
] |
|
Yohimbine
|
D015016 |
[A plant alkaloid with alpha-2-adrenergic blocking activity. Yohimbine has been used as a mydriatic and in the treatment of ERECTILE DYSFUNCTION.
, A stereoisomer of yohimbine.
] |
|
Yolk Sac
|
D015017 |
[The first of four extra-embryonic membranes to form during EMBRYOGENESIS. In REPTILES and BIRDS, it arises from endoderm and mesoderm to incorporate the EGG YOLK into the DIGESTIVE TRACT for nourishing the embryo. In placental MAMMALS, its nutritional function is vestigial; however, it is the source of INTESTINAL MUCOSA; BLOOD CELLS; and GERM CELLS. It is sometimes called the vitelline sac, which should not be confused with the VITELLINE MEMBRANE of the egg.
] |
|
Young Adult
|
D055815 |
[A person between 19 and 24 years of age.
] |
|
Youth Sports
|
D000067009 |
[SPORTS activities designed and/or organized for CHILDREN or YOUTH.
] |
|
Ytterbium
|
D015018 |
[An element of the rare earth family of metals. It has the atomic symbol Yb, atomic number 70, and atomic weight 173. Ytterbium has been used in lasers and as a portable x-ray source.
] |
|
Yttrium
|
D015019 |
[An element of the rare earth family of metals. It has the atomic symbol Y, atomic number 39, and atomic weight 88.91. In conjunction with other rare earths, yttrium is used as a phosphor in television receivers and is a component of the yttrium-aluminum garnet (YAG) lasers.
] |
|
Yttrium Isotopes
|
D015020 |
[Stable yttrium atoms that have the same atomic number as the element yttrium, but differ in atomic weight. Y-89 is the only naturally occurring stable isotope of yttrium.
] |
|
Yttrium Radioisotopes
|
D015021 |
[Unstable isotopes of yttrium that decay or disintegrate emitting radiation. Y atoms with atomic weights 82-88 and 90-96 are radioactive yttrium isotopes.
] |
|
Yucca
|
D027623 |
[A genus (and common name) in the Asparagaceae family. It is known for SAPONINS in the root that are used in SOAPS.
] |
|
Yugoslavia
|
D015022 |
[Created as the Kingdom of Serbs, Croats, and Slovenes in 1918. Yugoslavia became the official name in 1929. BOSNIA-HERZEGOVINA; CROATIA; and SLOVENIA formed independent countries 7 April 1992. Macedonia became independent 8 February 1994 as the Former Yugoslav Republic of Macedonia (MACEDONIA REPUBLIC).
] |
|
Yukon Territory
|
D015874 |
[A territory of northwest Canada, bounded on the north by the Arctic Ocean, on the south by British Columbia, and on the west by Alaska. Its capital is Whitehorse. It takes its name from the Yukon River, the Indian yu-kun-ah, meaning big river. (From Webster's New Geographical Dictionary, 1988, p1367 & Room, Brewer's Dictionary of Names, 1992, p608)
] |
|
ZAP-70 Protein-Tyrosine Kinase
|
D051746 |
[A protein tyrosine kinase that is required for T-CELL development and T-CELL ANTIGEN RECEPTOR function.
] |
|
Zalcitabine
|
D016047 |
[A dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by a hydrogen. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. The compound is a potent inhibitor of HIV replication at low concentrations, acting as a chain-terminator of viral DNA by binding to reverse transcriptase. Its principal toxic side effect is axonal degeneration resulting in peripheral neuropathy.
] |
|
Zambia
|
D015024 |
[A republic in southern Africa, south of DEMOCRATIC REPUBLIC OF THE CONGO and TANZANIA, and north of ZIMBABWE. Its capital is Lusaka. It was formerly called Northern Rhodesia.
] |
|
Zamiaceae
|
D032481 |
[A plant family of the order Cycadales, class Cycadopsida, division CYCADOPHYTA.
] |
|
Zanamivir
|
D053243 |
[A guanido-neuraminic acid that is used to inhibit NEURAMINIDASE.
] |
|
Zantedeschia
|
D031064 |
[A plant genus of the family ARACEAE. The common name of Calla Lily or Callalily also refers to the Calla genus (CALLA PLANT).
] |
|
Zanthoxylum
|
D032106 |
[A plant genus of the family RUTACEAE. Some members of Zanthoxylum are reclassified from ELEUTHEROCOCCUS, Melicope, and EVODIA. The twigs are used as dental brushing sticks (TOOTHBRUSHING). Most plants that are called Fagara have been reclassified as Zanthoxylum, however some Fagara were reclassified to MELICOPE (also in the Rutacea family) or to GLEDITSIA (a genus in the FABACEAE family).
] |
|
Zea mays
|
D003313 |
[Zea species that are thought to be ancestors and probable progenitors to corn.
, A plant species of the family POACEAE. It is a tall grass grown for its EDIBLE GRAIN, corn, used as food and animal FODDER.
] |
