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What's the signification of nuclear vacuoles in human sperm?
(2008-07-01)
The aim of this study was to determine the extent of DNA fragmentation and the presence of single/denatured or double stranded of DNA in sperm with large nuclear vacuoles (LNV) selected by high-magnification. A total of ...
Synergy of DNA-bending nucleoid proteins and macromolecular crowding in condensing DNA
(2007-10-01)
Many prokaryotic nucleoid proteins bend DNA and form extended helical protein-DNA fibers rather than condensed structures. On the other hand, it is known that such proteins (such as bacterial HU) strongly promote DNA ...
A Glimpse into the Satellite DNA Library in Characidae Fish (Teleostei, Characiformes)
(Frontiers Media Sa, 2017-08-14)
Satellite DNA (satDNA) is an abundant fraction of repetitive DNA in eukaryotic genomes and plays an important role in genome organization and evolution. In general, satDNA sequences follow a concerted evolutionary pattern ...
DNA staining method based on formazan precipitation induced by blue light exposure
(Journal of Visualized Experiments, 2018)
DNA staining methods are very important for biomedical research. We designed a simple method that allows DNA visualization to the naked eye by the formation of a colored precipitate. It works by soaking the acrylamide or ...
Polymer induced condensation of DNA supercoils
(American Institute of Physics (AIP), 2008-11-14)
Macromolecular crowding is thought to be a significant factor driving DNA condensation in prokaryotic cells. Whereas DNA in prokaryotes is supercoiled, studies on crowding-induced DNA condensation have so far focused on ...
Relationship between DNA damage and sperm head birefringence
(Elsevier B.V., 2011-06-01)
Birefringence or double refraction is the decomposition of a ray of light into two rays when it passes through an anisotropic material such as quartz. Sperm cells have been demonstrated to be optically anisotropic. The ...