| 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) |
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| 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) |
| killer yeast | <microbiology> A yeast that secretes a toxin that can kill other yeasts. (09 Oct 1997) |
| fission yeast | <fungus> Species of fission yeast commonly used for studies on cell cycle control because there is a distinct G2 phase to the cycle. Only distantly related to the budding yeast Saccharomyces cerevisiae Saccharomyces cerevisiae. A further advantage is that some mammalian introns are processed correctly. (18 Nov 1997) |