Results 181 to 190 of about 8,404 (224)
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Chromatin organization in Paracentrotus lividus eggs.
Cell biology international reports, 1985After purification by buoyant density centrifugation in ethidium bromide - CsCl gradient and electrophoretic fractionation, the DNA fragments isolated from P. lividus egg nuclei incubated with micrococcal nuclease exhibit a typical oligomeric pattern.
DI LIEGRO I +3 more
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Free choline in sea urchin embryos (Paracentrotus lividus)
Experientia, 1977A sensitive radio-enzymatic assay for choline, applied to extracts of developing sea urchin embryos, revealed that free choline in eggs declines during cleavage and rises abruptly previous to gastrulation, indicating an important shift in choline metabolism between these two stages.
N, Wolfson, M, Acara, B, Rennick
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A novel gene order in the Paracentrotus lividus imtochondrial genome
Gene, 1987The mitochondrial DNA (mtDNA) from Paracentrotus lividus (sea urchin) eggs, a circular molecule of about 15,500 bp, has been cloned in plasmid vectors after cleavage with various restriction enzymes. By a combination of Northern blot hybridization and nucleotide sequence analysis we have characterized most of the P.
ROBERTI, Marina +5 more
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Ecology of Paracentrotus lividus
2001Paracentrotus lividus is an incredibly oppommistic generalist, with a very wide range of adaptive responses to environmental conditions. It can do everything and anything. This chapter presents a short overview of the ecology of Paracentrotus lividus. Paracentrotus lividus is a rather large sea urchin that can reach 7.5 cm. In spite of its popular name,
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[Embryotoxicity of fenbendazole in Paracentrotus lividus].
Bollettino della Societa italiana di biologia sperimentale, 1991The aim of the present work was to evaluate the embryotoxicity of Fenbendazole, a benzimidazole carbamate-derived anthelmintic drug widely employed in Veterinary Medicine, by using the embryonal development of Paracentrotus lividus (sea urchin) as a experimental model. Embryos were obtained by in vitro eggs fertilization and cultured in seawater.
L, Deiana +4 more
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Phylogenetic analysis and homology modelling of Paracentrotus lividus nectin
Molecular Diversity, 2009The extracellular matrix protein Pl-nectin, a 210-kDa homodimer originally purified from sea urchin eggs, plays a crucial role in cell adhesion and embryonic morphogenesis. The compiled cDNA sequence, obtained by RT-PCR primer walking and 3' RACE, identified a 984aa product containing a 23aa signal peptide and including all six internal peptides ...
Costa Caterina +4 more
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Silver nanoparticle toxicity in sea urchin Paracentrotus lividus
Environmental Pollution, 2013Silver nanoparticles (AgNPS) are an important model system for studying potential environmental risks posed by the use of nanomaterials. So far there is no consensus as to whether toxicity is due to AgNPs themselves or Ag(+) ions leaching from their surfaces.
Siller L +6 more
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Locomotor performance in the sea urchin Paracentrotus lividus
Journal of the Marine Biological Association of the United Kingdom, 2003The locomotor performance of the Mediterranean sea urchin Paracentrotus lividus was investigated under laboratory conditions. Individuals were placed singly in the centre of a glass surface positioned either horizontally or vertically in tanks with seawater, and their locomotor activity was recorded.
Domenici P +2 more
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Differentiation of the genital apparatus in a juvenile echinoid (Paracentrotus lividus)
2020info:eu-repo/semantics ...
Spirlet, Christine +2 more
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Chapter 13 Ecology of Paracentrotus lividus
2007Publisher Summary This chapter discusses the ecology of Paracentrotus lividus ( P. lividus )––a large sea urchin. The analysis of sequence variation in a fragment of the mitochondrial gene cytochrome c oxidase suggests that P. lividus has two randomly mating populations in the western Mediterranean and in the eastern Atlantic, with panmixis ...
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