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Laboratory mouse
The laboratory mouse is a small mammal of the order Rodentia which is bred and kept for scientific research. Laboratory mice are usually of the species ''Mus musculus''. They are the most commonly used mammalian research model and are used for research in genetics, psychology, medicine and other scientific disciplines. Mice belong to the Euarchontoglires clade, which includes humans. This close relationship, the associated high homology with humans, their ease of maintenance and handling, and their high reproduction rate, make mice particularly suitable models for human-oriented research. The laboratory mouse genome has been sequenced and many mouse genes have human homologues.〔(【引用サイトリンク】title=MGI — Biology of the Laboratory Mouse )〕
Other mouse species sometimes used in laboratory research include the American white-footed mouse (''Peromyscus leucopus'') and the deer mouse (''Peromyscus maniculatus'').
== History as a biological model ==
Mice have been used in biomedical research since the 16th Century when William Harvey used them for his studies on reproduction and blood circulation and Robert Hooke used them to investigate the biological consequences of an increase in air pressure. During the 18th Century Joseph Priestley and Antoine Lavoisier both used mice to study respiration. In the 19th Century Gregor Mendel carried out his early investigations of inheritance on mouse coat color but was asked by his superior to stop breeding in his cell "smelly creatures that, in addition, copulated and had sex".〔 He then switched his investigations to peas but, as his observations were published in a somewhat obscure botanical journal, they were virtually ignored for over 35 years until they were rediscovered in the early 20th Century. In 1902 Lucien Cuénot published the results of his experiments using mice which showed that Mendel's laws of inheritance were also valid for animals — results that were soon confirmed and extended to other species.〔
In the early part of the 20th century Clarence Cook Little, a Harvard undergraduate was conducting studies on mouse genetics in the laboratory of William Ernest Castle. Little and Castle collaborated closely with Abbie Lathrop who was a breeder of fancy mice and rats which she marketed to rodent hobbyists and keepers of exotic pets, and later began selling in large numbers to scientific researchers. Together they generated the DBA (Dilute, Brown and non-Agouti) inbred mouse strain and initiated the systematic generation of inbred strains. The mouse has since been used extensively as a model organism and is associated with many important biological discoveries of the 20th and 21st Centuries.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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