M O S T genetic work on Neurospora has been done with N . crassa. In this heterothallic species sexual reproduction culminates in an ascus with eight unisexual spores, each being the representative of a single meiotic product and thus giving rise to a homokaryotic mycelium. By contrast, its relative N . tetrasperma is a pseudohomothallic fungus whose typical ascus includes four bisexual spores ...

CCORDING to a widely accepted view of the mechanism of ascospore forma-A tion in Neurospora crassa, a single diploid nucleus in the young ascus undergoes meiosis followed by mitotic division of the four resulting nuclei. A spore is formed around each of the eight products, sister nuclei from the mitotic divisions inhabiting adjacent spores. A second mitosis gives binucleate spores. This mechani...

The mechanics of spore delimitation within the ascus have long been a topic of controversy among ascomycete cytologists. Lateral fusion of recurving astral rays around each nucleus following the mi-totic, third division in the ascus (6), progressive differentiation of spore membranes in a granular layer of cytoplasm around each nucleus (5), fusion of epiplasmic vacuoles (8), and invagination of...

During independent surveys of freshwater ascomycetes in Japan and USA two new species of Lindgomyces were collected from submerged wood in freshwater. These species are described and illustrated based on morphological data and phylogenetic relationships based on analyses of nuclear ribosomal sequence data (partial SSU and LSU, and ITS). Lindgomyces apiculatus, collected in Japan, is characteriz...

Objective: The high number of smear tests has a workload on pathologists/cytopathologists, which raises the concern for quality diagnoses. application high-risk human papillomavirus (hr-HPV) analyses with PAP begun to contribute clinical practice. In this study, we aimed show effect hr-HPV analysis results via atypical squamous cell/squamous intraepithelial lesion (ASC/SIL) ratio standards. Mat...

The filamentous ascomycete Bipolaris maydis is a plant pathogen that causes corn leaf blight and has been used in cytological studies of sexual reproduction. In this fungus, when null mutants each septin are crossed with the wild-type strain, all ascospores derived from same asci show abnormal morphology. phenomenon was remarkably similar to event known as “ascus dominance” Neurospora crassa , ...

The aim of this study was to compare direct visual inspection (DVI) with Pap smear in diagnosis of precancerous lesion of cervix. A total of 1500 women were screened cytologically as well as clinically with direct visual inspection of cervix after application of acetic acid (DVI). A total of 1500 women were screened cytologically as well as clinically with direct visual inspection of cervix aft...

We analyzed the performance of Amplicor for detecting carcinogenic human papillomavirus (HPV) infections and cervical precancer in women with an atypical squamous cells of undetermined significance (ASCUS) Pap and compared the results with Hybrid Capture 2 (hc2) in the ASCUS and low-grade squamous intraepithelial lesion (LSIL) triage study (ALTS). Baseline specimens collected from women referre...