Now showing items 1-10 of 95
Analysis of NOR distribution in cultivated and naturalized stocks of rainbow trout (Oncorhynchus mykiss)
(Genetics and Molecular Biology, 2002-01-01) [Artigo]
In salmonid species, nucleolar organizing regions (NORs) have frequently been found on a single chromosome pair. However, some other, smaller yet active NORs have also been described. In the present study, NORs were found ...
Nitric oxide reduces oxidative stress generated by lactofen in soybean plants
(Pesticide Biochemistry and Physiology, 2010-05-01) [Artigo]
Nitric oxide (NO) is a molecule able to directly scavenge ROS and end chain reactions, which can be generated by some herbicides This study aimed to evaluate whether the pretreatment of soybean plants with sodium nitroprusside ...
Chromosome Mapping of H1 Histone and 5S rRNA Gene Clusters in Three Species of Astyanax (Teleostei, Characiformes)
(Cytogenetic and Genome Research, 2011-01-01) [Artigo]
We report here on the physical mapping of the H1 histone genes (hisDNA) and the 5S ribosomal DNA (rDNA) in 3 Neotropical fish species of the genus Astyanax (A. altiparanae, A. bockmanni and A. fasciatus) and the comparative ...
Specific probe for supernumerary chromosomes of Prochilodus lineatus (Teleostei, Characiformes, Prochilodontidae) obtained by chromosome microdissection
(Chromosome Research, 2009-05-01) [Resumo]
A histological study of the seminal vesicle of the armoured catfish Corydoras aeneus
(Anatomia Histologia Embryologia-Journal of Veterinary Medicine Series C, 2007-04-01) [Artigo]
Most species of Corydoras exhibited a reproductive behaviour called 'T-position', and exhibited an accessory gland in the male genital tract, called the seminal vesicle. It appeared that both the structure and the composition ...
Chromosomal features of nucleolar dominance in hybrids between the Neotropical fish Leporinus macrocephalus and Leporinus elongatus (Characiformes, Anostomidae)
(Genetica, 2009-11-01) [Artigo]
In the present study, the chromosomal mechanisms of nucleolar dominance were analyzed in the hybrid lineage Piaupara, which resulted from crossing the Leporinus macrocephalus female (Piau double dagger u) and L. elongatus ...
NMR and conductivity study of the protonic conductor HPb2Nb3O10 center dot nH(2)O
(Solid State Ionics, 2000-11-01) [Artigo]
Electrical conductivity and H-1 Nuclear Magnetic Resonance (NMR) techniques were used to investigate the ion-exchanged layered lead-niobate perovskite HPb2Nb3O10. nH(2)O, over the temperature range 90-350 K. Compounds were ...
Chelating agent effects in the synthesis of mesoscopic-size superconducting particles
(Journal of Sol-Gel Science and Technology, 2008-05-01) [Artigo]
Several routes and procedures have been used in these last years as an effort to achieve single-phase mesoscopic-size superconducting samples. In this paper, the effects of using citric acid (CA), tartaric acid (TA) and ...
Metallomic study of mercury in fish muscle (Semaprochilodus sp.) from Amazon - Brazil
(Faseb Journal, 2014-04-01) [Resumo]