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A specialized midgut region in stingless bees (Hymenoptera: Apidae: Meliponinae)
(Inst Histol Embriol-conicet, 1996-12-01)
Ultrastructure of the anterior end of the midgut of three Neotropical stingless bees, including an obligate necrophagous species Trigona hypogea, suggests that this midgut region has no role in nutrient absorption because ...
Mast cells in the eyes of Calomys callosus (Rodentia : Cricetidae) infected by Toxoplasma gondii
(Springer, 2002-06-01)
The 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 ...
Aspectos da ultra-estrutura dos cecos gástricos da larva de Odontosciara sp. (Diptera: Sciaridae)
(Sociedade Brasileira de Zoologia, 1985-01-01)
Ultrastructural features of the gastric caeca of Odontosciara sp. are reported. The species has 4 lateral caeca connected with the anterior midgut at the level of the foregut junction. The epithelial cell features indicate ...
First report of endocytobionts in the digestive tract of ponerine ants
(Pergamon-Elsevier B.V. Ltd, 2009-02-01)
We conducted ultrastructural studies to examine the presence of microorganisms in the midgut of the ant Odontomachus bauri (Ponerinae), as a contribution towards understanding the relationships between microorganisms and ...
Cytochemical localization of lipids in the venom glands of worker bees of Apis mellifera (Hymenoptera, Apidae)
(California State University, 2003-01-01)
The technique of osmium imidazol for the ultrastructural detection of lipids in the secretory cells of the venom gland of 14-days old worker bees of Apis mellifera L. demonstrated the presence of these components at various ...
Experimental endocrine therapies promote epithelial cytodifferentiation and ciliogenesis in the gerbil female prostate
(Springer, 2007-06-01)
The incidence of ciliated cells in the prostate gland of the female gerbil (Meriones unguiculatus) is uncommon and apparently becomes more frequent during androgen (testosterone cypionate) and anti-estrogen (letrozole) ...
A new strategy of endosymbiont midgut bacteria in ant (Ponerinae)
(Pergamon-Elsevier B.V. Ltd, 2010-04-01)
The location and ultrastructure of bacteria associated with microvilli in the midgut of Odontomachus bauri were examined by transmission electron microscopy. These filamentous type bacteria are the second morphotype described ...
Efeito da restrição alimentar materna durante a prenhez e lactação nos neurônios MCH e CART da área hipotalâmica lateral (LHA)
(Universidade Estadual Paulista (Unesp), 2019-02-28)
A associação do baixo peso ao nascer com alto risco de doenças como obesidade, diabete tipo 2 e doenças cardiovasculares na vida adulta levaram à hipótese da “Origem Desenvolvimentista da Saúde e Doença” (DOHaD). Nessa ...
Probiótico administrado em embriões e pintos de frangos de corte na redução da colonização por Salmonella Heidelberg e integridade entérica
(Universidade Estadual Paulista (Unesp), 2018-11-01)
Objetivou-se avaliar o efeito de probiótico administrado in ovo ou spray sobre a histomorfometria, contagem de células caliciformes (CC), avaliação ultraestrutural da mucosa entérica e quanto à capacidade de redução de ...
Análise dos aspectos ultraestruturais da espermatogênese de Heteroptera
(Universidade Estadual Paulista (Unesp), 2017-02-17)
A subordem Heteroptera possui sete infraordens com aproximadamente 80 famílias. A maioria ocorre em todos os continentes (exceto Antártica) e algumas ilhas. Além dos Heteroptera terrestres, há os aquáticos e semi-aquáticos ...