BACKGROUND The pathogenesis of Francisella tularensis, the causative agent of tularemia, has been primarily characterized in mice. However, the high degree of sensitivity of mice to bacterial challenge, especially with the human virulent strains of F. tularensis, limits this animal model for screening of defined attenuated vaccine candidates for protection studies. METHODS AND FINDINGS We ana...

Previous studies in rat have demonstrated decreased number of mitochondria and uncoupling of oxidative phosphorylation after administration of glucocorticoids but at supraphysiological doses and using synthetic glucocorticoids. To analyze the relationships between corticosterone levels (the natural glucocorticoid in rat) and muscle mitochondrial metabolism, Lewis and Fischer 344 rats were bilat...

It is a truth universally acknowledged that documentary editions have found a very welcoming home in cyberspace. Documentary editing has often been considered a lower form of scholarship, as suggested by its being commonly called "noncritical editing," a name that barely hides the conviction of its being a non-or prescholarly endeavor. 1 However, this allegedly humble form of editing has now ta...

The Iranian species belonging to the genus Indiopius Fischer are reviewed. A description of the first recorded female of I. cretensis Fischer, 1966 is provided. A key to the world species of the genus Indiopius is given.

We welcome the correspondence from Fischer and colleagues regarding our recent paper on vocal learning in chimpanzee food grunts [1]. Fischer et al. make two challenges to our paper's conclusions, which we address here.

BACKGROUND The aim of the present study was to examine if differences in the endocannabinoid (ECB) system might be linked to strain specific variations in reward-related behavior in Fischer344 (Fischer) and Wistar rats. METHODOLOGY/PRINCIPAL FINDINGS Two rat strains, the Fischer and the Wistar strain, were tested for different aspects of reward sensitivity for a palatable food reward (sweeten...

Fischer 344 rats fed on a diet that is deficient in selenium are more resistant to the hepatocarcinogen aflatoxin B1 (AFB1) than those fed on a selenium-sufficient diet. Hepatic cytosol from either selenium-deficient Fischer 344 rats or Hooded Lister rats possesses a marked increase in both reductase activity toward AFB1-dialdehyde and glutathione S-transferase (GST) activity toward AFB(1)-8,9-...

Michael Fischer has proposed a mutual exclusion algorithm that ingeniously exploits real time. We prove this algorithm using the time-honored technique of establishing an appropriate invariant.