Now showing items 1-10 of 327
Cytogenetic studies in three species of Lutjanus (Perciformes: Lutjanidae: Lutjaninae) from the Isla Margarita, Venezuela
(Neotropical Ichthyology, 2008-03-01) [Artigo]
No presente estudo três espécies de Lutjaninae, Lutjanus analis, L. griseus e L. synagris foram analisadas através da coloração convencional com Giemsa, banda C e coloração com nitrato de prata para identificar as Regiões ...
Nuclear DNA content in 20 species of Siluriformes (Teleostei: Ostariophysi) from the Neotropical region
(Genetics and Molecular Biology, 2004-01-01) [Artigo]
In the present study, 20 species of Siluriformes fish were analyzed in order to determine their nuclear DNA content and compare these data with their diploid number. In addition, the extension and importance of the changes ...
Remodeling of rat ventral prostate after castration involves heparanase-1
(Cell and Tissue Research, 2008-05-01) [Artigo]
Androgen deprivation causes the rat ventral prostate to reduce to 10% of its original size by 21 days after castration. The regressive changes result from the loss of epithelial cells by apoptosis and marked reorganization ...
Morphology and histology of male and female reproductive systems in the inseminating species Scoloplax distolothrix (Ostariophysi : Siluriformes : Scoloplacidae)
(Journal of Morphology, 2008-09-01) [Artigo]
The morphology and histology of male and female reproductive systems were examined in Scoloplax distolothrix. Internal insemination was documented in this species by the presence of sperm within the ovaries. Mature males ...
Length-weight relationships for 20 species collected in the Jurumirim reservoir (Paranapanema Basin, Brazil)
(Journal of Applied Ichthyology, 2009-06-01) [Artigo]
Length-weight relationships were estimated for 20 species of the Jurumirim reservoir (southern Brazil): one Pimelodidae, one Callichthyidae, six Characidae, one Prochilodontidae, six Anastomidae, one Erythrinidae, two ...
Low-power laser irradiation improves histomorphometrical parameters and bone matrix organization during tibia wound healing in rats
(Journal of Photochemistry and Photobiology B: Biology, 2003-05-01) [Artigo]
The influence of daily energy doses of 0.03, 0.3 and 0.9 J of He-Ne laser irradiation on the repair of surgically produced tibia damage was investigated in Wistar rats. Laser treatment was initiated 24 h after the trauma ...
Aquaporin 9 (AQP9) localization in the adult dog testis excurrent ducts by immunohistochemistry
(Anatomical Record-advances In Integrative Anatomy and Evolutionary Biology, 2007-12-01) [Artigo]
Aquaporins (AQPs) are small, intrinsic membrane proteins that are present in many cell types involved in fluid transport. AQP9 is a major apical water channel that is expressed throughout the efferent ducts, epididymis, ...
Comparative chromosome mapping of repeated DNAs in cichlid fishes
(Chromosome Research, 2009-05-01) [Resumo]
Skeletal muscles with antagonistic muscular actions: morphological, contractile and metabolic characteristics
(International Journal of Morphology, 2009-12-01) [Artigo]
The muscles can perform the same function in a specific segment (muscles of fast and slow contraction), and at the same time be antagonistic in relation to muscular action (flexors or extensors). The present research aimed ...
Down-regulation of MyoD gene expression in rat diaphragm muscle with heart failure
(International Journal of Experimental Pathology, 2008-06-01) [Artigo]
Diaphragm myopathy has been described in patients with heart failure (HF), with alterations in myosin heavy chains (MHC) expression. The pathways that regulate MHC expression during HF have not been described, and myogenic ...