Medical research

Ultrasound exposure improves depressive behavior in rodents

It is well known that whole-body exposure to high frequency ultrasound increases brain activity in humans. However, little is known about its impact and associated mechanisms on emotional states like depression. Now, a team ...

Medical research

Common prebiotic fiber mitigates harm of high-salt diet in rats

New research in rats finds a diet high in the prebiotic fiber inulin offered a protective effect against the damage of a high-salt diet. The research will be presented this week at the American Physiological Society (APS) ...

Cardiology

High-fat diet induces high blood pressure in rat kidneys

A high-fat diet after 16 weeks induced hypertension in rats, according to researchers from Henry Ford Health and Wayne State University in Detroit. High blood pressure can lead to narrowing of the blood vessels throughout ...

Obstetrics & gynaecology

Stress may be associated with fertility issues in women

Female rats exposed to a scream sound may have diminished ovarian reserve and reduced fertility, according to a small animal study published in the Endocrine Society's journal, Endocrinology.

Psychology & Psychiatry

Motivation to achieve goals may depend on anxiety level

People often have different responses to stress. These distinct behavioral reactions could represent factors that indicate different individual susceptibility to develop certain pathologies such as depression. A research ...

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Rat

50 species

Stenomys Thomas, 1910

Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats.

Rats are typically distinguished from mice by their size; rats are generally large muroid rodents, while mice are generally small muroid rodents. The muroid family is very large and complex, and the common terms rat and mouse are not taxonomically specific. Generally, when someone discovers a large muroid, its common name includes the term rat, while if it is small, the name includes the term mouse - scientifically, the terms are not confined to members of the Rattus and Mus genera. Compare the taxonomic classification of the Pack rat and Cotton mouse.

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