Now showing items 1-10 of 84
Chromosomal location of heterochromatin and 45S rDNA sites in four South American triatomines (Heteroptera: Reduviidae)
(Comparative Cytogenetics, 2010-01-01) [Artigo]
The Triatominae are distributed in Brazilian regions and are the vector of Chagas disease. This group is also characterized by lower karyotype variability, occurrence of holokinetic chromosomes and inverted meiosis of the ...
A persistent organic pollutant related with unusual high frequency of hermaphroditism in the neotropical anuran Physalaemus cuvieri Fitzinger, 1826
(Environmental Research, 2014-07-01) [Artigo]
Representing a reflection of anthropic activity, the level of xenobiotic compounds in aquatic ecosystems has increased in recent years, bringing severe damage to the environment. The present work reports the occurrence of ...
Realized evolvability: quantifying phenotypic evolution in a Drosophila clade
(Journal of Zoological Systematics and Evolutionary Research, 2011-02-01) [Artigo]
Understanding the evolutionary potential of morphological evolution is still a major problem in evolutionary biology. In this study, we tried to quantify the amount of variation of different traits among species of a ...
The pioneering use of ISSR (Inter Simple Sequence Repeat) in Neotropical anurans: Preliminary assessment of genetic diversity in populations of Physalaemus cuvieri (Amphibia, Leiuperidae)
(Biological Research, 2013-06-17) [Artigo]
The greatest diversity of anurans in the world is in Brazil and one of the major challenges is to reconcile the accelerated economic development with strategies that aim to maintain this diversity in forest fragments, often ...
Differentiation of Leydig Cells in the Mongolian Gerbil
(Microscopy Research and Technique, 2010-02-01) [Artigo]
Information on postnatal Leydig cell (LC) differentiation in the Mongolian gerbil has been unavailable. Therefore, current investigation was designed to examine LC lineage differentiation in this rodent, from birth to ...
Mast Cells and Ethanol Consumption: Interactions in the Prostate, Epididymis and Testis of UChB Rats
(American Journal of Reproductive Immunology, 2011-09-01) [Artigo]
ProblemAlcoholism has reached alarming proportions while fertility rates slowing in populations. The assessment of inflammatory effects with emphasis on the variation of the mast cells comparing ethanol chronic ingestion ...
The advertisement call of dendropsophus tritaeniatus (Bokermann, 1965) (Anura: Hylidae)
(Zootaxa, 2013-06-06) [Artigo]
Clonal monosomy of chromosome 21 in a case of myelodysplastic syndrome
(Genetics And Molecular Research, 2011-01-01) [Artigo]
This study reports on a cytogenetic finding in a bone marrow examination of a 47-year-old male patient treated in the Hematology and Blood Transfusion Service of the Hospital de Base in Sao Jose do Rio Preto, Sao Paulo ...
Ultrastructural characteristics of spermatogenesis in Pallas's mastiff bat, Molossus molossus (Chiroptera: Molossidae)
(Microscopy Research and Technique, 2012-07-01) [Artigo]
Despite the large number of species, their wide distribution, and unique reproductive characteristics, Neotropical bats have been poorly studied, and important aspects of the reproduction of these animals have not been ...
Genetic and biochemical markers of hydroxyurea therapeutic response in sickle cell anemia
(Bmc Medical Genetics, 2013-10-09) [Artigo]
Background: Sickle cell anemia (SCA) presents a complex pathophysiology which can be affected by a number of modifying factors, including genetic and biochemical ones. In Brazil, there have been no studies verifying ...