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This is a list of Superfund sites in Arizona designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency (EPA) to create a list of polluted locations requiring a long-term response to clean up ...
In May 2015, artificial insemination was performed for the first time in the species. [87] In July of the same year, the female laid 89 eggs, but like all previous natural attempts, they were all unviable. [88] In April 2019, the female individual at the zoo died after another failed artificial insemination attempt. [89]
The revival of the woolly mammoth is a proposed hypothetical that frozen soft-tissue remains and DNA from extinct woolly mammoths could be a means of regenerating the species. Several methods have been proposed to achieve this goal, including cloning , artificial insemination , and genome editing .
"We're proud to have supported over 100,000 families in home insemination and have received thousands of reported success stories, many which the families have allowed us to share on our website ...
The first recorded case of artificial insemination was John Hunter in 1790, who helped impregnate a linen draper's wife. [1] [2] The first reported case of artificial insemination by donor occurred in 1884: William H. Pancoast, a professor in Philadelphia, took sperm from his "best looking" student to inseminate an anesthetized woman without her knowledge.
Use of artificial insemination is also associated with smaller litter size, with frozen semen having a stronger effect than fresh semen. [25] The largest litter size to date was set by a Neapolitan Mastiff in Manea, England, on November 29, 2004; the litter was 24 puppies. [26]
Artificial fertilization (by shipping semen) is another option, but male animals can experience stress during semen collection, and the same goes for females during the artificial insemination procedure. Furthermore, this approach yields lower-quality semen, because shipping requires extending the life of the sperm for the transit time.
This page was last edited on 29 December 2013, at 01:44 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
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