Results 61 to 70 of about 1,262 (86)
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Zoologica Scripta, 2022
AbstractThe genus Calomys includes several species that have very similar external morphologies, which often leads to confusing field identification and has resulted in conflictive taxonomic histories. One of its clades involves large‐sized body forms, known as the Calomys callosus complex.
Raúl E. González‐Ittig +8 more
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AbstractThe genus Calomys includes several species that have very similar external morphologies, which often leads to confusing field identification and has resulted in conflictive taxonomic histories. One of its clades involves large‐sized body forms, known as the Calomys callosus complex.
Raúl E. González‐Ittig +8 more
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Influence sexual dimorphism on the persistence of blood parasites in infected Calomys callosus
Research in Veterinary Science, 2008Gender has long been known to be a contributory factor in the incidence and progression of disorders associated with immune system disregulation. The aims of this experiment were to verify the influences of sexual dimorphism on the persistence of blood parasites out of the acute phase of infection.
Angela Maria, Lourenço +4 more
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Structural evaluation of the effects of chronic ethanol ingestion on the testis of Calomys callosus
Tissue and Cell, 2009Chronic exposure to ethanol may results in pathophysiologic changes in cellular function. The present work was designed to investigate the morphology of testis submitted to experimental ethanol ingestion. Experimental animals were divided into two groups.
Martinez, M. +9 more
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Trophoblastic invasion of the uterine epithelium in Calomys callosus (Rodentia, cricetidae)
Journal of Morphology, 1994AbstractImplantation sites in the uterus of the cricetid rodent Calomys callosus were examined by light and electron microscopy at several points during day 4 of pregnancy to determine the changes occurring in the trophoblast and epithelial cells during the early blastocyst‐endometrial relationship, particularly the epithelial removal phase. By morning,
E A, Ferro, E, Bevilacqua
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Mast cells in the eyes of Calomys callosus (Rodentia: Cricetidae) infected by Toxoplasma gondii
Parasitology Research, 2002The mast cell is a powerful effector cell for the innate immune system, acting through the secretion of several distinct mediators. Few studies have demonstrated the relationship between mast cells and toxoplasmosis. In this study, mast cells were investigated in two experimental Toxoplasma infections using Calomys callosus (Rodentia: Cricetidae) as ...
Gil, C. D. +3 more
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Cytological aspects of vascular invasion by the trophoblast of Calomys callosus in hepatic tissues
Journal of Morphology, 1995AbstractEctoplacental cones isolated from embryos on the seventh day of pregnancy wer transplanted beneath the hepatic capsule of recipeint adult animals to document the morphological patterns of vascular invasion by the trophoblast in the absence of the maternal environment and the influence of its peculiar vasculature.
M, Faria, E, Bevilacqua
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Trypanosoma cruzi: Effects of social stress in Calomys callosus a natural reservoir of infection
Experimental Parasitology, 2008Social environment can represent a major source of stress affecting cortisol and/or corticosterone levels, thereby altering the immune response. We have investigated the effects of social isolation on the development of Trypanosoma cruzi infection in female Calomys callosus, a natural reservoir of this protozoan parasite. Animals were divided in groups
Carla Domingues, Santos +3 more
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Fine structure of the 7 postnatal days Calomys callosus palatine salivary glands
Annals of Anatomy - Anatomischer Anzeiger, 2002The aim of this study has been to determine the ultrastructural characteristics of the minor palatine salivary glands on the seventh day of development and to demonstrate wether their secretion is mucous, serous or seromucous by light, transmission and scanning electron microscopy.
Isabel Cristina, Céspedes +7 more
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Parasitology Research, 1997
Nitric oxide (NO) production by peritoneal macrophages was evaluated in Calomys callosus and Swiss mice during the course of infection with two strains of Trypanosoma cruzi. In C. callosus, no NO production was detected throughout the period of observation in animals infected with either parasite strain, except for a very low amount measured on day 40 ...
L, de Oliveira +4 more
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Nitric oxide (NO) production by peritoneal macrophages was evaluated in Calomys callosus and Swiss mice during the course of infection with two strains of Trypanosoma cruzi. In C. callosus, no NO production was detected throughout the period of observation in animals infected with either parasite strain, except for a very low amount measured on day 40 ...
L, de Oliveira +4 more
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Preconceptional infection and congenital toxoplasmosis in Calomys callosus
Journal of Reproductive Immunology, 2006B.F. Barbosa +3 more
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