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It is the most widely used "genetic background" for genetically modified mice for use as models of human disease. They are the most widely used and best-selling mouse strain due to the availability of congenic strains, easy breeding, and robustness. [1] The median lifespan of C57BL/6 mice is 27–29 months and the maximum lifespan is about 36 ...
Unlike most laboratory mouse strains, the C57BL/6 drinks alcoholic beverages voluntarily. It is more susceptible than average to morphine addiction, atherosclerosis, and age-related hearing loss. [11] When compared directly to BALB/c mice, C57BL/6 mice also express both a robust response to social rewards [43] [44] and empathy. [45]
Rodents have been employed in biomedical experimentation from the 1650s. [1] Rodent studies up to the early 19th century were mainly physiological or toxicological.The first rodent behavioral study was carried out in 1822, a purely observational study [2], while quantitative rodent behavioral testing began in the late 19th century [1] [2].
[6] [2] [4] Existing resistant strains of mice, such as C57BL/6, C57BL/10 and AKR, may not have clinical signs that viruses can cause for other animals. [7] It is important to note that the genetic background of the mouse can affect the infection, which means that host factors are involved in the regulation of susceptibility and resistance to ...
"Behavioral sink" is a term invented by ethologist John B. Calhoun to describe a collapse in behavior that can result from overpopulation.The term and concept derive from a series of over-population experiments Calhoun conducted on Norway rats between 1958 and 1962. [1]
The sale of mouse animal models began in 1933 with early sales to the United States Public Health Service and The Jackson Laboratory now provides a high proportion of the mice used in biomedical research [16] In particular, the C57BL/6J strain, which is widely used and cited is maintained at The Jackson Laboratory.
Charles River was founded in 1947 by Henry Foster, a young veterinarian who purchased one thousand rat cages from a Virginia farm and set up a one-person laboratory in Boston overlooking the Charles River. To fulfill the regional need for laboratory animal models, he bred, fed, and cared for the animals and personally delivered them to local ...
Female mice in the dangerous living environment group, showed higher levels of fecal corticosterone, and minimal maternal care compared to the females in the safe environment group. Furthermore, a dangerous environment inherently provides infanticide threats to female mice, increasing the likelihood that corticosterone concentrations will ...