1,721,146 research outputs found
The galaninergic enteric nervous system of pleuronectiformes (Pisces, Osteichthyes) : an immunohistochemical and confocal laser scanning immunofluorescence study
No full textThe galaninergic enteric nervous system of three flatfishes was studied using immunohistochemical and immuno fluorescence methods. Galanin-like immunoreactivity was mainly detected within the enteric intramural neurons of the stomachs and the proximal intestines. The sole, Solea solea L. and the flounder, Platichthys flesus L. showed a similar occurrence and relative distribution of galaninergic intramural neurons. Rare nervous fibre immunoreactive to the anti-galanin serum were observed in the muscular layers of the oesophagus of the turbot, Psetta maxima L. The presence and relative abundance of galanin-like immunoreactive neurons in the remaining organs of the alimentary canal of the turbot showed a different pattern in comparison to those observed in the sole and the flounder. A galanin-like peptide was detected in nerve fibres running through the exocrine parenchyma of the pancreas of all three species. It is conceivable that the galaninergic system in these species plays a role in regulating gut muscle activity, and in controlling pancreatic secretion. Galanin and choline acetyltransferase were co-localized within the same neurons of the stomach and intestine. The result confirms the hypothesis that galanin in the gut of fish functions as a cholinergic modulator. Differently from other fish species, immunoreactive endocrine cells were not detected in the studied pleuronectiforme
Gastrointestinal helminths infection and digestive hormones in the fish-parasite systems
No full textImmunohistochemical study on the intramural innervation of the lower urinary tract in adult and foetal dogs
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The ultrastructure of the capsule surrounding Pomphorhynchus laevis (Acanthocephala) in its intermediate host Echinogammarus stammeri (Amphipoda)
No full textThe capsule or the membranous layer surrounding larvae of Pomphorhynchus laevis Müller, 1776 in its intermediate host, Echinogammarus stammeri S. Karaman, 1931, was studied by electron microscopy. Some observations were also made with a light microscope. Capsule components mainly show a tubular profile; capsule thickness can reach up to 8 microns. In some instances, within the hemocoel of E. stammeri, the parasite was encapsulated by amphipod hemocytes
Identificazione immunoistochimica di cellule con possibile funzione pacemaker nelle vie urinarie distali di verro e loro possibile relazione con la muscolatura e con l’innervazione intramurale
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Galanin in the enteric nervous system of Pleuronectiformes. An immunohistochemical study in three species: Psetta maxima (L., 1758), Platichthys flesus (L., 1758) and Solea solea (L., 1758)
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