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Detection of Leishmania (L.) chagasi in canine skin
(Elsevier B.V., 2011-05-31)
Canine visceral leishmaniasis (CVL) is caused by a protozoa parasite of the specie Leishmania (L.) chagasi endemic for humans and dogs in many regions of Brazil. The purpose of the present study was the detection of (L.) ...
Estruturas secretoras de Pavonia alnifolia (Malvaceae), uma espécie ameaçada de extinção
(2011-04-01)
Malvaceae shows a rich morphological diversity of secretory structures, which are of great ecological and taxonomical relevance. Nonetheless, until the present moment, studies on the secretory structures of the studied ...
Fine structure of Mytella falcata (Bivalvia) gill filaments
(Pergamon-Elsevier B.V. Ltd, 2008-01-01)
Bivalve filter feeders are sessile animals that live in constant contact with water and its pollutants. Their gill is an organ highly exposed to these conditions due to its large surface and its involvement in gas exchanges ...
Colleters on the inflorescence axis of croton glandulosus (euphorbiaceae): structural and functional characterization
(Univ Chicago Press, 2015-01-01)
Premise of research. Croton glandulosus L. is a ruderal annual species of Euphorbiaceae native to the American tropics and widespread in urban and rural areas in Brazil. We investigated the structure, histochemistry, and ...
Histopathological effects of the herbicide atrazine on gills of the Brazilian endemic bivalve Diplodon expansus
(2016-03-15)
Due to their benthic filter-feeding habits and high bioaccumulation potential of metals and organic compounds, bivalve molluscs have been widely used in studies in the field and laboratory to assess the toxic effects of ...
Relationship between the inflammatory tumor microenvironment and different histologic types of canine mammary tumors
(2018-08-01)
Mammary neoplasms are the tumors with higher incidence in female dogs. Among the factors that contribute for the development of this and other neoplasms, the inflammatory tumor microenvironment plays a crucial role. Several ...
Morphology, secretion composition, and ecological aspects of stipular colleters in Rubiaceae species from tropical forest and savanna
(2015-11-19)
Colleters are secretory structures that produce and release mucilage or a mucilage-resin mixture protecting meristems and young structures against desiccation, herbivores, and pathogens. The secretions may vary in colleters ...
Intestino médio do diplópodo Urostreptus atrobrunneus: Estrutura, função e redefinição das células hepáticas
(2017-01-01)
Diplopods are considered important macroarthropods the soil as part of its maintenance and balance. These animals usually do not occur in high densities, but population explosions caused by environmental disturbances, ...
Analysis of vitellogenin by histochemical method as an indicator of estrogenic effect in male Danio rerio exposed to metals
(2020-05-01)
Several chemicals present in the aquatic environment have the ability to alter the endocrine system of aquatic organisms, including the metals cadmium (Cd) and zinc (Zn). In males, a tool to analyze this effect is the ...
A reduced, yet functional, nectary disk integrates a complex system of floral nectar secretion in the genus Zeyheria (Bignoniaceae)
(Soc Botanica Brasil, 2017-07-01)
The genus Zeyheria (Bignoniaceae) comprises only two species, both of which have been described as possessing a reduced and non-functional nectary disk. Despite the importance of this evolutionary change in the floral ...