| yeast RNase | <enzyme> An enzyme catalyzing the exonucleolytic cleavage of RNA to yield 3'-phosphomononucleotides. Synonym: RNase U4. (05 Mar 2000) |
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| 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) |
| yellow body | <gynaecology> A yellow glandular mass in the ovary formed by an ovarian follicle that has matured and discharged its ovum. The corpus luteum secretes progesterone. If the ovum has been impregnated, the corpus luteum increases in size and persists for several months (corpus luteum graviditatis). If impregnation has not taken place, the corpus luteum degenerates and shrinks (corpus luteum menstruationis). Synonym: yellow body of ovary. (13 Nov 1997) |
| yellow bone marrow | Bone marrow in which the meshes of the reticular network are filled with fat. Synonym: medulla ossium flava. (05 Mar 2000) |
| yellow cartilage | A cartilage in which the cells are surrounded by a territorial capsular matrix outside of which is an interterritorial matrix containing elastic fibre networks in addition to the collagen fibres and ground substance. Synonym: yellow cartilage. (05 Mar 2000) |
| yellow corallin | A sodium salt of aurin. (05 Mar 2000) |
| yellow disease | The occurrence of patches of yellow colour in the skin, resembling xanthoma, but without the nodules or plates. Synonym: cholesteroderma, xanthochroia, xanthoderma, xanthopathy, yellow disease, yellow skin. Origin: xantho-+ G. Chroma, colour (05 Mar 2000) |
| yellow enzyme | Any enzyme that possesses a flavin nucleotide as coenzyme; e.g., xanthine oxidase, succinate dehydrogenase. Synonym: yellow enzyme. (05 Mar 2000) |
| yellow fat cell | <pathology> An adipocyte that has asingle big fat droplet and very little cytoplasm. (11 May 1997) |