Results 21 to 30 of about 3,038,279 (306)

Ventilatory Phenotypes among Four Strains of Adult Rats. [PDF]

open access: yes, 2002
Our purpose in this study was to identify different ventilatory phenotypes among four different strains of rats. We examined 114 rats from three in-house, inbred strains and one outbred strain: Brown Norway (BN;n = 26), Dahl salt-sensitive (n = 24), Fawn-
Dwinell, Melinda R.   +4 more
core   +2 more sources

Megakaryocytopoiesis in the Rat [PDF]

open access: yesBlood, 1965
Abstract Labeling of rat megakaryocytes was observed after a single intravenous injection of tritiated thymidine, and the following conclusions were made. 1. Morphologic appearance of megakaryocytes corresponded to their stage of maturation. 2. Only the youngest recognizable megakaryocytes (stage I) appeared
SHIRLEY EBBE   +3 more
openaire   +3 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

Some nutritional properties of unrefined sugar and its promotion of the survival of new-born rats. [PDF]

open access: yes, 2005
1. The claims that rats fed on diets with ‘brown sugar’ (unrefined muscovado) perform better in a number of ways than do rats fed on refined white sugar (sucrose) have been examined. 2.
Eisa, OA, Yudkin, J
core   +1 more source

The rat race [PDF]

open access: yesEMBO reports, 2019
Labmates are colleagues, friends, comforters…and competitors.
Oliver Hoeller, Brooke Morriswood
openaire   +3 more sources

Network topology drives population temporal variability in experimental habitat networks

open access: yesPopulation Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu   +3 more
wiley   +1 more source

Particulate Matter Exposure Impairs Systemic Microvascular Endothelium-Dependent Dilation [PDF]

open access: yes, 2004
Acute exposure to airborne pollutants, such as solid particulate matter (PM), increases the risk of cardiovascular dysfunction, but the mechanisms by which PM evokes systemic effects remain to be identified.
Barger, Mark   +4 more
core   +3 more sources

Between Droughts and Floods: The Seasonal Response of Freshwater Snails in Artificial Reservoirs in the Brazilian Semiarid Region

open access: yesPopulation Ecology, EarlyView.
We investigate the seasonal dynamics of two freshwater snails, Biomphalaria straminea and Melanoides tuberculata, in artificial reservoirs of the Brazilian semiarid region. Despite regulated hydrology, B. straminea exhibited strong seasonal fluctuations associated with dry periods, while M. tuberculata maintained stable populations throughout the year,
Lucas Henrique Sousa da Silva   +6 more
wiley   +1 more source

Effects of high sucrose diet, gemfibrozil, and their combination on plasma paraoxonase 1 activity and lipid levels in rats [PDF]

open access: yes, 2010
We investigated the influence of high sucrose diet (HSD) after 3 or 5 weeks of administration on paraoxonase 1 (PON1) activity in plasma of normolipidemic rats and the relationship between serum PON1 activity, triacylglycerides (TGs), HDL and total ...
Bradamante, Vlasta   +4 more
core  

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