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ascus
as·cus A0456000 (ăs′kəs)n. pl. as·ci (ăs′ī′, -kī′) A membranous, often club-shaped structure in ascomycetes in which karyogamy occurs, followed by the formation of eight haploid ascospores. [New Latin, from Greek askos, bag.]ascus (ˈæskəs) n, pl asci (ˈæsaɪ; ˈæskaɪ) (Botany) a saclike structure that produces (usually) eight ascospores during sexual reproduction in ascomycetous fungi such as yeasts and mildews[C19: from New Latin, from Greek askos bag]as•cus (ˈæs kəs) n., pl. as•ci (ˈæs aɪ, -kaɪ, -ki) the sac in ascomycetes in which the spores are formed. [1820–30; < New Latin < Greek askós bag, sac] ThesaurusNoun | 1. | ascus - saclike structure in which ascospores are formed through sexual reproduction of ascomycetesreproductive structure - the parts of a plant involved in its reproductionascomycete, ascomycetous fungus - any fungus of the class Ascomycetes (or subdivision Ascomycota) in which the spores are formed inside an ascus | Translationsascus
ascus[′as·kəs] (mycology) An oval or tubular spore sac bearing ascospores in members of the Ascomycetes. ascus
ascus [as´kus] the spore case of certain fungi.ASCUSIn the Bethesda system, acronym for atypical squamous cells of undetermined significance , under cell. See also: Bethesda system. as·cus, pl. as·ci (as'kŭs, as'ī), The saclike cell of Ascomycetes in which ascospores develop following nuclear fusion and meiosis. [G. askos, bag] ASCUS Atypical squamous cell of undetermined significance Cytology A cell seen in a pap smear of the cervix that fulfills some of the criteria–eg nuclear enlargement and irregularity, cytoplasmic clearing, and thickened cell membranes, that define cells typical of either a condyloma or a neoplasm. See CIN, HSIL, LSIL. Cf AGUS, SIL. ASCUS Abbreviation for atypical squamous cells of undetermined significance. Fig. 50 Ascus . An ascus containing ascospores of Neurospora crassa. ascus or (formerly) theca (pl. asci) a cell present in the fruiting body of ASCOMYCETE fungi in which the fusion of HAPLOID nuclei occurs during sexual reproduction. This is normally followed by MEIOSIS, giving rise to four haploid cells, after which MITOSIS produces eight ASCOSPORES. The precise arrangement of ascospores within the ascus enables the events at meiosis to be fully analysed (see TETRAD ANALYSIS). The asci are usually enclosed within an aggregation of hyphae termed an ASCOCARP, a number of different types being recognized, e.g. perithecium, cleistothecium, apothecium.ASCUS
Acronym | Definition |
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ASCUS➣Atypical Squamous Cells of Undetermined Significance | ASCUS➣Atypical Squamous Cells of Uncertain Significance | ASCUS➣Atypical Squamous Cells of Unknown Significance | ASCUS➣Association for School, College and University Staffing (now American Association for Employment in Education) | ASCUS➣Academic Serials in Communication-Unified System (New York) |
ascus Related to ascus: colposcopyWords related to ascusnoun saclike structure in which ascospores are formed through sexual reproduction of ascomycetesRelated Words- reproductive structure
- ascomycete
- ascomycetous fungus
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