Results 231 to 240 of about 4,591 (253)
Some of the next articles are maybe not open access.
Ploidy and Prognosis in Renal Carcinoma
British Journal of Urology, 1993SummaryThe value of tumour ploidy status as a prognostic indicator in renal carcinoma is disputed. In this retrospective study the DNA content of 90 primary and 10 secondary renal cell carcinomas was measured using flow cytometry. Data on recurrence and survival were available in all cases.
B. Curran +5 more
openaire +3 more sources
Ploidy manipulation and performance
Aquaculture, 1986Abstract The chromosome set manipulation techniques of induced polyploidy, gynogenesis and androgenesis are likely to have significant applications in aquaculture. Induced triploidy is valuable for production of sterile individuals and increasing hybrid survival, and may be useful for producing individuals with increased heterozygosity.
openaire +2 more sources
The puzzle of ploidy of Purkinje neurons
The Cerebellum, 2006This paper places attention on the discrepancies existing in the literature on the ploidy of Purkinje neurons and focuses on the special case of partial replication of their genome and on the unequal frequency of polyploid Purkinje neurons in the cerebellar cortex of the lobes and the vermis. Owing to the compartmental structure of the cerebellum, this
openaire +3 more sources
Ploidy Regulation of Gene Expression
Science, 1999Microarray-based gene expression analysis identified genes showing ploidy-dependent expression in isogenic Saccharomyces cerevisiae strains that varied in ploidy from haploid to tetraploid. These genes were induced or repressed in proportion to the number of chromosome sets, regardless of the mating type.
Alok J. Saldanha +4 more
openaire +3 more sources
Origin and ploidy of multipronuclear zygotes
Reproduction, Fertility and Development, 1999Recently, several authors have proposed strategies for correction of triploidy based on the removal of the extra pronucleus at the zygote stage. In the present bioassay, the following were analysed: (1) the different factors that can induce the formation of multipronuclear zygotes in mammals; (2) the different morphological patterns established ...
Henry Sathananthan +2 more
openaire +2 more sources
Ploidy Breeding in Ornamentals
2018Ploidy alterations are frequently used in ornamental plant breeding to induce novel variation, to overcome crossing barriers, or to create homogenous lines. Here we review three in vitro ploidy breeding tools with proven practical potential: mitotic polyploidization using mitosis arresting chemicals, meiotic polyploidization through the application of ...
Johan Van Huylenbroeck +5 more
openaire +2 more sources
The American Journal of Surgical Pathology, 1989
Ralph M. Richart, Yao S. Fu
openaire +3 more sources
Ralph M. Richart, Yao S. Fu
openaire +3 more sources
Ploidy Study in Sporothrix schenkii
Fungal Genetics and Biology, 1999Sporothrix schenckii is a dimorphic fungus that is pathogenic for humans. No sexual cycle has been reported for this fungus and little is known of its genetic constitution. To inquire into the ploidy state of Sporothrix schenckii, different approaches were followed: DNA content during transition from conidia to yeast, survival to ultraviolet ...
openaire +3 more sources
1994
Maize is unique among plant species in having techniques available in which conversion from diploidy to tetraploidy can be accomplished by the use of two meiotic mutants that produce diploid unreduced gametes—namely, asynaptic (as) (e.g., Miller 1963, Alexander 1957) and elongate (el) (Rhoades and Dempsey 1966). Although theoretically these two mutants
openaire +2 more sources
Maize is unique among plant species in having techniques available in which conversion from diploidy to tetraploidy can be accomplished by the use of two meiotic mutants that produce diploid unreduced gametes—namely, asynaptic (as) (e.g., Miller 1963, Alexander 1957) and elongate (el) (Rhoades and Dempsey 1966). Although theoretically these two mutants
openaire +2 more sources