Buscar
Mostrando ítems 31-40 de 598
Clinical and histochemical alterations of the periodontal ligament in gerbils after malocclusion induced
(2007-12-01)
The aim of this article is to show the clinical and histochemical alterations of the first periodontal ligament, on the right side, after upper molars teeth extraction on the left side in gerbils. After two months, the ...
Histochemical characterization and secretory activity of the hypopharyngeal glands in the primitive social wasp Polistes versicolor (Hymenoptera: Vespidae)
(2005-12-12)
Using histochemical techniques, the present work describes the basic histochemical characteristics of the secretion in hypopharyngeal glands of Polistes versicolor (Olivier) and estimates the secretory activity in specimens ...
Assessment of the Toxic Potential of Sewage Sludge in the Midgut of the Diplopod Rhinocricus padbergi
(Springer, 2011-06-01)
The destination of sewage sludge is a problem faced by sewage treatment plants (STPs). Many alternatives have been sought, such as the application of sewage sludge in degraded soils and in agriculture as fertilizer. However, ...
Ileum of the Cephalotes ants: A specialized structure to harbor symbionts microorganisms
(Pergamon-Elsevier B.V. Ltd, 2008-10-01)
We conducted comparative morphological studies of the tract digestive of Cephalotes atratus, C. clypeatus and C. pusillus, aiming at describing the relationships among these three species, as well as the histochemical, ...
Morphological, histological, and ultrastructural characterization of degenerating salivary glands in females of the cattle-tick Rhipicephalus (Boophilus) microplus (CANESTRINI, 1887) (Acari : Ixodidae)
(Elsevier B.V., 2005-01-01)
The present study describes the morphology and ultrastructure of the salivary glands of semi-engorged females of the southern cattle-tick Rhipicephalus (Boophilus) microplus. The acini that compose these glands, at that ...
Morphological features and occurrence of degenerative characteristics in the hypopharyngeal glands of the paper wasp Polistes versicolor (Olivier) (Hymenoptera : Vespidae)
(Elsevier B.V., 2006-01-01)
Different histochemical techniques were applied to examine the morphological features of the secretory cells of hypopharyngeal glands in the wasp Polistes versicolor. The results showed that most analyzed individuals present ...
Morphological characterization of the ovary and vitellogenesis dynamics in the tick Amblyomma cajennense (Acari : Ixodidae)
(Elsevier B.V., 2004-11-10)
In this work we describe the internal morphology of the female reproductive system of the cayenne tick Amblyomma cajennense. This system is represented by a panoistic ovary, which lacks nurse cells in the germarium. This ...
Ecomorphology of the digestive tract of the brazilian electric ray Narcine brasiliensis (Olfers, 1831) (Torpediniformes: Narcinidae)
(2017-07-01)
Elasmobranchii shows particular characteristics that make them susceptible to the impacts caused by fishing pressure, especially bottom trawling, which mostly affect rays, as they have demersal habits. Based on food ...
Histochemical studies of Rhinocricus padbergi Verhoeff ovaries (Diplopoda, Spirobolida, Rhinocricidae)
(1998-12-01)
Histochemical studies of Rhinocricus padbergi Verhoeff ovaries demonstrated that the oocytes contained lipids, proteins and polysaccharides. The probable synthesis site of each is considered, and the origin and function ...