| years of potential life lost | Measure of the relative impact of various diseases and lethal forces on society, computed by estimating the years that people would have lived if they had not died prematurely from injury, cancer, heart disease, etc. (05 Mar 2000) |
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| yeast | <fungus> Yeast is the colloquial name for single-celled members of the fungal families, ascomycetes, basidiomycetes and imperfect fungi that tend to be unicellular for the greater part of their life cycle. Commercially important yeasts include Saccharomyces cerevisiae, pathogenic yeasts include the genus Candida. See: Schizosaccharomyces pombe. (18 Nov 1997) |
| yeast artificial chromosome | <molecular biology> A vector system that allows extremely large segments of DNA to be cloned. Useful in chromosome mapping, contiguous yeast artificial chromosomes covering the whole Drosophila genome and certain human chromosomes are available. Acronym: YAC (15 Nov 1997) |
| yeast artificial chromosomes | Yeast DNA sequences that have incorporated into them very large foreign DNA fragments; the recombinant DNA is then introduced into the yeast by transformation; the use of yeast artificial chromosomes permits the cloning of large genes with their flanking regulatory sequences. (05 Mar 2000) |
| yeast autolysate | <cell biology> This substance is used as a culture medium and a food flavouring, it is made by breaking down yeast with intracellular enzymes. (06 May 1997) |
| yeast extract agar | A medium used to induce sporulation and reduce vegetative growth in the cultivation of fungi. (05 Mar 2000) |
| yeast infection | <gastroenterology, microbiology, oncology> Infection with a fungus of the genus Candida. It is usually a superficial infection of the moist cutaneous areas of the body and is generally caused by Candida albicans, it most commonly involves the skin (dermatocandidiasis), oral mucous membranes (oral candidiasis), respiratory tract (bronchocandidiasis) and vagina (vaginal candidiasis or thrush). Rarely there is a systemic infection or endocarditis. Oral candidiasis: describes a fungal (yeast) infection of the oral cavity due to Candida. It is common in infants, diabetics or those on chemotherapy and is well recognised in patients with HIV infection and AIDS. Oesophageal candidiasis: Infection of the oesophagus by the yeast-like fungus Candidal albicans. Usually occurs in the immunocompromised individual (AIDS or following chemotherapy). Oral candidiasis is a predisposing factor but oesophageal involvement can occur without evidence of infection in the oral cavity. Symptoms include difficulty swallowing, pain on swallowing and oral lesions. Diagnosis is made using endoscopy. Treatment is with antifungal agents such as ketoconazole or fluconazole. Synonym: moniliasis, candidosis, oidiomycosis, blastodendriosis. (16 Dec 1997) |
| yeast RNase | <enzyme> An enzyme catalyzing the exonucleolytic cleavage of RNA to yield 3'-phosphomononucleotides. Synonym: RNase U4. (05 Mar 2000) |
| yeast syndrome | <syndrome> The yeast candida has been thought to cause a syndrome with a number of non-specific problems including fatigue, loss of appetite, headache, short-attention span, depression and all manner of intestinal irregularities. There is no scientific evidence to support the existence of the yeast syndrome (also called the yeast connection). (12 Dec 1998) |
| yeast vectors | <molecular biology> Yeast cells that contain genes. (11 May 1997) |
| yeast, dried | The dry cells of any suitable strain of saccharomyces cerevisiae or candida utilis. It can be obtained as a by-product from the brewing of beer or by growing on media not suitable for beer production. Dried yeast serves as a source of protein and vitamin b complex. (12 Dec 1998) |
| yeasts | A general term for single-celled rounded fungi that reproduce by budding. Brewers' and bakers' yeasts are saccharomyces cerevisiae; therapeutic dried yeast is yeast, dried. (12 Dec 1998) |
| yeldrine | <zoology> The yellow-hammer. Synonym: yeldrock, and yoldrin. Origin: Cf. Yellow. Source: Websters Dictionary (01 Mar 1998) |
| yellow | Being of a bright saffronlike colour; of the colour of gold or brass; having the hue of that part of the rainbow, or of the solar spectrum, which is between the orange and the green. "Her yellow hair was browded [braided] in a tress." (Chaucer) "A sweaty reaper from his tillage brought First fruits, the green ear and the yellow sheaf." (Milton) "The line of yellow light dies fast away. <medicine> " (Keble) Yellow atrophy, a North American fresh water bass (Morone interrupta) native of the lower parts of the Mississippi and its tributaries. It is yellow, with several more or less broken black stripes or bars. Synonym: barfish. Yellow berry. <botany> The European willow warbler. The European wood warbler. Origin: OE. Yelow, yelwe, yelow, yeoluw, from AS. Geolu; akin to D. Geel, OS. & OHG. Gelo, G. Gelb, Icel. Gulr, Sw. Gul, Dan. Guul, L. Helvus light bay, Gr. Young verdure, greenish yellow, Skr. Hari tawny, yellowish. Cf. Chlorine, Gall a bitter liquid, Gold, Yolk. 1. A bright golden colour, reflecting more light than any other except white; the colour of that part of the spectrum which is between the orange and green. "A long motley coat guarded with yellow." 2. A yellow pigment. Cadmium yellow, Chrome yellow, Indigo yellow, King's yellow, etc. See Cadmium, Chrome, etc. Naples yellow, a yellow amorphous pigment, used in oil, porcelain, and enamel painting, consisting of a basic lead metantimonate, obtained by fusing together tartar emetic lead nitrate, and common salt. <chemistry> Patent yellow, a yellow pigment consisting essentially of a lead oxychloride. Synonym: Turner's yellow. Source: Websters Dictionary (01 Mar 1998) |
| yellow atrophy of the liver | See: acute yellow atrophy of the liver. (05 Mar 2000) |
Synonyms : Aphrodyne, Aventis Brand of Yohimbine Hydrochloride, Corynanthine, Corynanthine Tartrate, Glenwood Brand of Yohimbine Hydrochloride, Kramer Brand of Yohimbine Hydrochloride, Palisades Brand of Yohimbine Hydrochloride, Pluriviron, Yocon, Yohimbin Spiegel, Yohimex
Synonyms : Vitelline Sac of Embryo, Embryo Vitelline Sac, Embryo Vitelline Sacs, Sac, Yolk, Sacs, Yolk, Yolk Sacs
Synonyms :
Synonyms :
Synonyms : Isotopes, Yttrium
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| yellow fever virus |
a mosquito-borne species of the genus Flavivirus that causes yellow fever in Central and South America and Africa.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
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| yawn |
A yawn is a reflex of deep inhalation and exhalation associated with being tired, with a need to sleep, or from boredom. The word "yawn" has evolved from the Middle English word yanen, an alteration of yonen, or yenen, which in turn comes from the Old English geonian. Yawning is a powerful non-verbal message with several possible meanings, depending on the circumstances: # An indication of tiredness, stress, over-work or boredom. ...
Ãâó: en.wikipedia.org/wiki/Yawn
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| yawning |
A yawn is a reflex of deep inhalation and exhalation associated with being tired, with a need to sleep, or from boredom. The word "yawn" has evolved from the Middle English word yanen, an alteration of yonen, or yenen, which in turn comes from the Old English geonian. Yawning is a powerful non-verbal message with several possible meanings, depending on the circumstances: # An indication of tiredness, stress, over-work or boredom. ...
Ãâó: en.wikipedia.org/wiki/Yawning
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| yellow marrow |
Bone marrow is the tissue comprising the center of large bones. It is the place where new blood cells are produced. Bone marrow contains two types of stem cells: hemopoietic (which can produce blood cells) and stromal (which can produce fat, cartilage and bone). Stromal stem cells have the capability to differentiate into many kinds of tissues, such as nervous tissue. ...
Ãâó: en.wikipedia.org/wiki/Yellow_marrow
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| Yersinia pestis |
Yersinia pestis is a species of rod-shaped bacterium, belonging to the family Enterobacteriaceae. It is the infectious agent of bubonic plague, and can also cause pneumonic plague and septicemic plague. ...
Ãâó: en.wikipedia.org/wiki/Yersinia_pestis
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| y | Japanese admiral who planned the attack on Pearl Harbor in 1941 (1884-1943) |
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| y | Saudi Arabian minister of petroleum who was a central figure in the creation of OPEC (born in 1930) |
| y | complain whiningly |
| y | cry loudly, as of animals |
| y | capital of the Ivory Coast |
| y | the Yanan language spoken by the Yana people |
| y | a member of an extinct North American Indian people who lived in the Pit river valley in northern California |
| y | a language group of the Hokan family |
| y | United States physicist (born in China) who collaborated with Tsung Dao Lee in disproving the principle of conservation of parity (born in 1922) |
| y | the capital and largest city of Myanmar |
| y | the longest river of Asia |
| y | the longest river of Asia |
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