TheAmami spiny rat ( Tokudaia osimensis ), found on the Japanese island of Amami Ōshima, is one of just a handful of mammals that lack Y chromosomes. What’s more, females as well as males have
Anillustration of one of Calhoun's rat experiments. Credit: National Library of Medicine, John B. Calhoun papers, 1909-1996. MS C 586. Series III: Historical Flow Chart (HFC), 1909-1995, box 143
Readchapter Rat Genetics and Toxicology: US/Japan meetings on laboratory animal science have been held virtually every year since 1980 under the US/Japan Login Register Cart Help. There is substantial genetic variation in the response of laboratory rats to xenobiotics, and this variation has important implications for toxicologic
3 Seal any cracks or gaps. A young rat can fit through gaps as small as a dime in size, and full size rats only require a gap as big as a quarter. Inspect along the baseboards, under cabinets and
Morerecently, the COVID-19 pandemic and its impact on the Japanese economy have coincided with a renewed increase in suicide rates, initially driven by rising suicide numbers among women
Ratshave been seen as filthy disease-spreaders since at least the time of the plague, but new research shows that rodents and other city-dwelling animals are less
Ratsare hardly a new phenomenon in the world's big metropolitan areas. But Japanese officials think the surge in rat sightings in their cities is being fueled by
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