1,720,994 research outputs found
Cetacei spiaggiati e campionati tramite biopsia cutanea: confronto tra le potenzialità valutative a livello ecotossicologico.
No full textThe use of immunofluorescence technique in the evaluation of presence of CYTP450 and ER receptor in cetaceans fibroblast cell cultures.
No full text
Recupero di cetacei spiaggiati come strumento di indagine per la valutazione degli effetti ecotossicologici nel bacino del Mediterraneo
No full textContaminanti organoclorurati in cetacei del Mediterraneo: review dei risultati ottenuti in esemplari spiaggiati lungo le coste italiane nel periodo 1978-2004.
No full textGoing 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
Progressi nell’ecotossicologia dei cetacei: colture cellulari di fibroblasti da biopsie cutanee.
No full textNew methodological tools in ecotoxicological studies of mediterranean cetaceans: the use of fibroblast cell cultures.
No full textEvidenza di effetti estrogenici in esemplari mediterranei di pesce spada (Xiphias gladius): risultati delle indagini ecotossicologiche
No full textHistochemical characterisation of oocytes of the swordfish Xiphias gladius
No full textThis paper reports a histological, histochemical and immunohistochemical characterisation of growing oocytes of the swordfish Xiphias gladius. The presence and distribution of carbohydrates, proteins, lipids, calcium. iron, vitellogenin/Vg, zona radiata protein/Zrp, metallothionein/Mt. and thyroid hormones/T-3-T-4 were studied during oogenesis (cortical alveoli, globules, yolk-granules, cytoplasm, follicular and radiata envelopes). During the initial vitellogenic phase, the oocytes cortical alveoli and oil globules containing neutral lipids exclusively. During this phase, small yolk granules appeared around the peripheral cytoplasm. and they increased through exogenous vitellogenesis. Yolk granules were composed of glycoproteins, calcium, iron, and proteins rich in lysine, arginine, tyrosine, tryptophan, cysteine and cystine. Vg and Mt were immunohistochemically detected in yolk. The follicular envelope contained proteins rich in amino acids. Moreover, calcium and thyroid hormones (triiodotyronine and thyroxine/T-3,T-4) were detected in this cell envelope. Cortical alveoli. which contained carboxylated and neutral glycoconjugates, were especially rich in N-acetyl-D-glucosamine, N-acetyl-D-glucosamine, galactose and sialic acid. Finally, the zona radiata was mainly proteinaccous in nature and was composed of calcium and neutral glycoproteins. The egg envelope or chorion and the liver showed specific immunoreactivities by using anti-salmon Zrp as the primary antiserum
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