Results 171 to 180 of about 2,814 (220)

Effects of 16 pure hydrocarbons and two oils on haemocyte and haemolymphatic parameters in the Pacific oyster, Crassostrea gigas (Thunberg)

Toxicology in Vitro, 2008
International audienceThe in vitro effects of polycyclic aromatic hydrocarbons (PAHs) on haemocyte and haemolymphatic parameters of the Pacific oyster, Crassostrea gigas, were tested using field concentrations (10(-7) and 10(-9) mg mL(-1)) observed in ...
Anne Bado-Nilles, Stéphane le Floch, Beatrice Gagnaire   +2 more
exaly   +2 more sources

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Insect haemocytes: What type of cell is that?

Journal of Insect Physiology, 2006
Classification of insect larvae circulating haemocytes is the subject of controversy, and the terminology used to designate each cellular type is often different from one species to another. However, a survey of the literature on insect haemocytes suggests that there are resemblances for most of the cell types and functions, in different insect species.
Carlos, Ribeiro, Michel, Brehélin
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TBT‐induced apoptosis in tunicate haemocytes

Applied Organometallic Chemistry, 1999
Early events in apoptosis include chromatin condensation followed by DNA fragmentation as well as translocation of phosphatidylserine (PS) in the outer plasma membrane. Organotin compounds increase intracellular Ca2+ levels and cause apoptosis in mammalian cells.
CIMA, FRANCESCA, BALLARIN, LORIANO
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Regulators and signalling in insect haemocyte immunity

Cellular Signalling, 2009
The innate immune system of insects relies on both humoral and cellular immune responses that are mediated via activation of several signalling pathways. Haemocytes are the primary mediators of cell-mediated immunity in insects, including phagocytosis, nodulation, encapsulation and melanization. The last years, research has focused on the mechanisms of
Vassilis J, Marmaras, Maria, Lampropoulou   +1 more
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Haemocytes and Their Population

1993
The circulatory system in insects is almost entirely of the open type wherein the haemolymph is confined to the body cavity or haemocoel. The dorsal vessel is a closed structure and considered to be the ‘primary circulatory pump’ (Jones, 1964) or the ‘dorsal pulsatile organ’ (Jones, 1977). The dorsal vessel, various accessory pulsatile organs and septa
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In vitro studies of insect haemocytes

Journal of Insect Physiology, 1971
Abstract Several criteria for the objective assessment of death of milkweek bug haemocytes in culture were examined and the in vitro pattern of DNA synthesis by the haemocytes was determined. The simplest criterion of death was the presence of ‘chromatin droplets’.
Dorothy Feir, Curtis R. Pantle
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Histochemical observations of the haemocytes ofLocusta migratoria

The Histochemical Journal, 1975
Five of the six categories of haemocytes of Locusta migratoria, that is, the plasmatocytes, spherule cells, granulocytes, coagulocytes and oenocytoids, contain conspicuous granules of mucosubstance in their cytoplasm. The mucosubstance has been characterized by using a series of histochemical tests, including Alcian Blue staining at different pH levels
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The effects of ligaturing Galleria mellonella larvae on total haemocyte counts and on mitotic indices among haemocytes

Journal of Insect Physiology, 1969
Abstract Ligaturing the heads of Galleria mellonella larvae did not lead to a significant change in the heat-fixed total haemocyte counts within a period of at least 7 days. When the thoraces of larvae were ligatured, there was a rapid and striking decrease in unfixed and heat-fixed total haemocyte counts posterior to the ligature.
Jack Colvard Jones, Daisy P. Liu
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Drosophila melanogaster embryonic haemocytes: masters of multitasking

Nature Reviews Molecular Cell Biology, 2007
Drosophila melanogaster haemocytes constitute the cellular arm of a robust innate immune system in flies. In the adult and larva, these cells operate as the first line of defence against invading microorganisms: they phagocytose pathogens and produce antimicrobial peptides.
Wood, Will, Jacinto, Antonio
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Chemokinetic behaviour of insect haemocytes in vitro

Journal of Cell Science, 1986
ABSTRACT Time-lapse microphotography was used to film the locomotory behaviour of cockroach haemocytes in vitro, and the cell tracks were analysed for speed and persistence; the percentage mobilization and the diffusion rate of the population were calculated.
G B, Takle, A M, Lackie
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