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Wistar rat. The Wistar rat is an outbred albino rat. This breed was developed at the Wistar Institute in 1906 for use in biological and medical research, and is notably the first rat developed to serve as a model organism at a time when laboratories primarily used the house mouse (Mus musculus).
In the U.S., the numbers of rats and mice used are not reported, but estimates range from around 11 million [3] to approximately 100 million. [4] In 2000, the Federal Research Division, Library of Congress, published the results of an analysis of its Rats/Mice/and Birds Database: Researchers, Breeders, Transporters, and Exhibitors.
Cervical dislocation (breaking the neck or spine) may be used for birds, mice, rats, and rabbits depending on the size and weight of the animal. [187] High-intensity microwave irradiation of the brain can preserve brain tissue and induce death in less than 1 second, but this is currently only used on rodents.
Caspar Wistar (1761–1818), physician and anatomist, grandson of the glassmaker. Isaac J. Wistar (1827-1905), Union general and penologist. Wistar Institute, a biomedical research center in Philadelphia, Pennsylvania, named after the physician. Wistar rat, a strain of albino laboratory rats developed at the institute.
The ship or wharf rat has contributed to the extinction of many species of wildlife, including birds, small mammals, reptiles, invertebrates, and plants, especially on islands. True rats are omnivorous, capable of eating a wide range of plant and animal foods, and have a very high birth rate. When introduced to a new area, they quickly ...
Albino Rock dove. An albino bird has a white beak, white plumage, non-coloured skin, white talons and pink or red eyes. Albinism is only seen in about 1 of every 1,800 birds. The two most common species of albino birds are the common house martin and the American robin. [25] Famous albino birds include "Snowdrop", a Bristol Zoo penguin. [48]
Spontaneously hypertensive rat (SHR) is a laboratory rat which is an animal model of primary hypertension, used to study cardiovascular disease. It is the most studied model of hypertension measured as number of publications. [ 1 ]
Often called "albino", this amelanistic python owes its yellow color to unaffected carotenoid pigments.Amelanism (also known as amelanosis) is a pigmentation abnormality characterized by the lack of pigments called melanins, commonly associated with a genetic loss of tyrosinase function.