نتایج جستجو برای: ascus

تعداد نتایج: 726  

Journal: :Lichenologist 2023

Abstract The new genus Nimisora Pérez-Ort., M. Svenss. & J. C. Zamora is introduced to accommodate a puzzling lecideoid epiphyte common in the central Iberian Peninsula. characterized by following combination of characters: apothecia, excipulum composed sparingly branched radiating hyphae with narrow lumina, thick walls and swollen terminal cells, presence brown K+ olivaceous green pigment ...

Journal: :Genetics 1980
L S Davidow L Goetsch B Byers

Yeast cells subjected to a reversible thermal arrest of meiosis yielded progressively fewer spores per ascus as the arrest was extended. Dissection of two-spored asci by a newly developed method that prevents selection of false asci revealed that the spores were not a random sample of the haploid meiotic products. Most, if not all, pairs of spores contain nonsister products of the reductional d...

Journal: :The Brazilian journal of infectious diseases : an official publication of the Brazilian Society of Infectious Diseases 2009
Laura Mendoza Torres Malvina Páez Ariel Insaurralde María Isabel Rodriguez Amalia Castro Elena Kasamatsu

Cervical cancer is the most frequent malignant tumour of women in Latin America being human papillomavirus (HPV) the main cause. The aim of this study was to increase the knowledge about the cervical infections with oncogenic HPV types (HR-HPV) in Asuncion, Paraguay. Two hundred and seventy-two cervical samples were analyzed using hybrid capture II assay (HCA II) for HR-HPV. The frequency of HR...

Journal: :Journal of clinical pathology 2003
S Sahebali C E Depuydt K Segers A J Vereecken E Van Marck J J Bogers

AIMS To test the ability of Ki-67 to detect cytological lesions in a screening setting and its use as a surrogate marker of human papillomavirus (HPV) infection. METHODS A study of liquid based cytology, HPV DNA testing by MY09/MY11 consensus polymerase chain reaction (PCR), type specific PCRs, and Ki-67 immunocytochemistry on a randomly selected series of 147 patients. RESULTS Comparison o...

2013
Haiyan Guo Megan C. King

Eukaryotic organisms employ a variety of mechanisms during meiosis to assess and ensure the quality of their gametes. Defects or delays in successful meiotic recombination activate conserved mechanisms to delay the meiotic divisions, but many multicellular eukaryotes also induce cell death programs to eliminate gametes deemed to have failed during meiosis. It is generally thought that yeasts la...

Journal: :Genetics 1979
N B Raju

Crosses heterozygous and homozygous for Sk-1, Sk-2 and Sk-3 were examined by light microscopy. All three Spore killers behave similarly. In heterozygous killer x sensitive crosses, meiosis and ascospore development are normal until after the second postmeiotic mitosis when four of the eight ascospores in each ascus stop developing and degenerate. The four surviving ascospores carry the killer. ...

Journal: :Journal of clinical microbiology 2015
F Bottari M Sideri C Gulmini S Igidbashian A Tricca C Casadio S Carinelli S Boveri D Ejegod J Bonde M T Sandri

Analytical and clinical performance validation is essential before introduction of a new human papillomavirus (HPV) assay into clinical practice. This study compares the new BD Onclarity HPV assay, which detects E6/E7 DNA from 14 high-risk HPV types, to the Hybrid Capture II (HC2) HPV DNA test, to concurrent cytology and histology results, in order to evaluate its performance in detecting high-...

Journal: :FEMS microbiology letters 1991
C De Virgilio J Müller T Boller A Wiemken

Trehalase was studied in Schizosaccharomyces pombe cells growing vegetatively on minimal medium and in sporulating cultures. Acid trehalase activity, measured at pH 4.2, was absent in vegetative cells and occurred only in asci, indicating that this activity represented the sporulation-specific trehalase reported previously. In contrast, neutral trehalase, measured at pH 6.0, was constitutively ...

2017
Nita Ray Sibani Sengupta Amrita Samanta Sourav Lo Daliya Biswas Dibakar Haldar

Background: Cervical cancer in India accounts for 1/4 th cancer burden of world. Morbidity and mortality due to cervical cancer declined dramatically in developed countries after introduction of cytology based screening programs and quality treatment. ObjectiveTo find out proportion of and pattern of cellular atypia and dysplasia, to evaluate ASCUS/ LSIL cases with colposcopy, HPV testing and h...

Journal: :Acta cytologica 2014
Jennifer L Sauter Sharon L Mount Timothy L St John Christina M Wojewoda Ronald J Bryant Gladwyn Leiman

OBJECTIVES This study investigates potential colposcopy referral rates, as per the latest American Society for Colposcopy and Cervical Pathology recommendations, following the change in high-risk human papillomavirus (HR-HPV) detection methodology from Hybrid Capture 2 (HC2) to APTIMA at our institution. STUDY DESIGN Rates of colposcopy referral were compared between two cohorts, each compris...

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