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Ascus and ascospore morphogenesis
Mycological Research, 1996The diagnostic feature for members of the subdivision Ascomycotina is that sexual reproduction results in the production of endogenous ascospores within asci. A range of ascus and ascospore types is found within the group. Traditionally, asci have been classified as unitunicate, bitunicate or prototunicate, although a spectrum of intermediate types of ...
Read, ND, Beckett, A
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Gynecologie, obstetrique & fertilite, 2006
A report of ASCUS is always confusing or painful to the clinician, as histological correlate of this diagnosis is wide, ranging from a totally normal cervix mucosa to infiltrating carcinoma; most of the time it is the result of benign inflammatory or reactive changes.
J-C, Boulanger, H, Sevestre
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A report of ASCUS is always confusing or painful to the clinician, as histological correlate of this diagnosis is wide, ranging from a totally normal cervix mucosa to infiltrating carcinoma; most of the time it is the result of benign inflammatory or reactive changes.
J-C, Boulanger, H, Sevestre
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Ceskoslovenska patologie, 2008
The peak of incidence in cervical carcinoma precedes epithelial atrophy following menopause. Nevertheless, some carcinomas develop in the postmenopausal period. Atrophy, namely the partially developed, shares some cytomorphology features with SIL, especially if inflammatory changes, common in this period, interfere. Proliferation test is recognized and
J, Dusková, J, Drozennová, R, Hajná
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The peak of incidence in cervical carcinoma precedes epithelial atrophy following menopause. Nevertheless, some carcinomas develop in the postmenopausal period. Atrophy, namely the partially developed, shares some cytomorphology features with SIL, especially if inflammatory changes, common in this period, interfere. Proliferation test is recognized and
J, Dusková, J, Drozennová, R, Hajná
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American Journal of Obstetrics and Gynecology, 2002
This study related morphologic subtype, human papillomavirus status, and a second cytologic examination to the follow-up biopsy-proven high-grade squamous intraepithelial lesion (HSIL; grade II or III cervical intraepithelial neoplasia) after a cytologic diagnosis of atypical squamous cells of undetermined significance (ASCUS).Seven hundred four liquid-
Sara A, Hughes +9 more
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This study related morphologic subtype, human papillomavirus status, and a second cytologic examination to the follow-up biopsy-proven high-grade squamous intraepithelial lesion (HSIL; grade II or III cervical intraepithelial neoplasia) after a cytologic diagnosis of atypical squamous cells of undetermined significance (ASCUS).Seven hundred four liquid-
Sara A, Hughes +9 more
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1981
The bitunicate ascus as defined by Luttrell (1951) is surrounded by two walls that differ in their ability to extend. The outer, inextensible wall (ectotunica) ruptures when the pressure within the mature ascus increases, whereas the extensible inner wall (endotunica) elongates.
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The bitunicate ascus as defined by Luttrell (1951) is surrounded by two walls that differ in their ability to extend. The outer, inextensible wall (ectotunica) ruptures when the pressure within the mature ascus increases, whereas the extensible inner wall (endotunica) elongates.
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Wall structure of a bitunicate ascus
Planta, 1971The bitunicate ascus develops in two stages prior to ascospore formation: 1) initial growth and expansion of the ascus mother-cell, and 2) deposition of a secondary wall layer, the endotunica, within the outer primary wall layer, the ectotunica. The layers of the bitunicate ascus are composed of microfibrils embedded in an amorphous matrix.
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The Botanical Review, 1989
The bitunicate ascus paradigm recognized by E. S. Luttrell is reviewed. Species demonstrated to fit the paradigm are listed. Attempts to redefine the bitunicate ascus with functional as well as structural characters are outlined including Chadefaud’sTrois Categories d’Ascomycetes, Sherwood’s Unusual Ascus Types, Bellemere’sCouche Plan, and Eriksson’s ...
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The bitunicate ascus paradigm recognized by E. S. Luttrell is reviewed. Species demonstrated to fit the paradigm are listed. Attempts to redefine the bitunicate ascus with functional as well as structural characters are outlined including Chadefaud’sTrois Categories d’Ascomycetes, Sherwood’s Unusual Ascus Types, Bellemere’sCouche Plan, and Eriksson’s ...
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LAYERED STRUCTURE IN THE BITUNICATE ASCUS
Canadian Journal of Botany, 1967The bitunicate ascus of Botryosphaeria piceae Funk was found to have a multilayered structure of the endotunica, the hydrophylic, extensible, inner wall of the ascus that functions in ascospore discharge. A similar multilayered endotunica was observed in Botryosphaeria quercuum (Schw.) Sacc. and in Pleospora herbarum (Fr.) Rab. var. herbarum following
A. Funk, R. A. Shoemaker
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The Operculate Ascus and Allied Forms
1981When the Crouan brothers (1857, 1858) discovered the operculum at the top of the ascus, they placed all species with this structure in the genus Ascobolus Persoon ex Hooker. Boudier (1879, 1885) was the first to recognize the importance of the operculate mode of ascus dehiscence for the classification of the discomy-cetes.
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