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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 ...
[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 ...
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]
Individual rats would rarely eat except in the company of other rats. As a result extreme population densities developed in the pen adopted for eating, leaving the others with sparse populations. In the experiments in which the behavioral sink developed, infant mortality ran as high as 96 percent among the most disoriented groups in the population.
The Charles River (Massachusett: Quinobequin), sometimes called the River Charles or simply the Charles, is an 80-mile-long (129 km) river in eastern Massachusetts.It flows northeast from Hopkinton to Boston along a highly meandering route, that doubles back on itself several times and travels through 23 cities and towns before reaching the Atlantic Ocean. [1]
In the UK in 2015, there were 3.33 million procedures on rodents (80% of total procedures that year). The most common species used were mice (3.03 million procedures, or 73% of the total) and rats (268,522, or 6.5%).
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 ...
C57BL/6 was created by Clarence Little, the first director and founder of JAX. However, he created the strain in 1921 (see here on the JAX site), whereas the Jackson Labs didn't come into being until 1929. In addition, JAX may be the largest supplier of C57BL/6J, but it probably is not the largest supplier of some other substrains, such as ...