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Ralph (cloned Rat)
Ralph was the first cloned rat. He was created by a team of researchers at the National Institute for Agricultural Research in France, working with a biotech company, genOway. To give birth to Ralph, 129 embryos were implanted into two females, and one became pregnant and gave birth to three rats, with Ralph being the first to be born. Rats are particularly difficult to clone, as early development in rodents is different from that in other mammals. Rat eggs "activate" as soon as they leave the ovaries, making it difficult to introduce new genetic material. A chemical is needed to stabilize the embryo before cloning is possible. Ralph has been cloned for medical purposes requiring genetically identical animals including testing in impact of genetics and the environment in the development of many diseases, as well as to take away and modify genes, as well as to solve a problem with rat physiology. Cloned from an adult cell, Ralph was cloned by researchers from China and France ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rattus
''Rattus'' is a genus of muroid rodents, all typically called rats. However, the term rat can also be applied to rodent species outside of this genus. Species and description The best-known ''Rattus'' species are the black rat (''R. rattus'') and the brown rat (''R. norvegicus''). The group is generally known as the Old World rats or true rats and originated in Asia. Rats are bigger than most Old World mouse, mice, which are their relatives, but seldom weigh over in the wild. Taxonomy of ''Rattus'' The genus ''Rattus'' is a member of the giant subfamily Murinae. Several other murine genera are sometimes considered part of ''Rattus'': ''Lenothrix'', ''Anonymomys'', ''Sundamys'', ''Kadarsanomys'', ''Diplothrix'', ''Margaretamys'', ''Lenomys'', ''Komodomys'', ''Palawanomys'', ''Bunomys'', ''Nesoromys'', ''Stenomys'', ''Taeromys'', ''Paruromys'', ''Abditomys'', ''Tryphomys'', ''Limnomys'', ''Tarsomys'', ''Bullimus'', ''Apomys'', ''Millardia'', ''Srilankamys'', ''Niviventer'', ''Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Individual Rodents
An individual is one that exists as a distinct entity. Individuality (or self-hood) is the state or quality of living as an individual; particularly (in the case of humans) as a person unique from other people and possessing one's own needs or goals, rights and responsibilities. The concept of an individual features in many fields, including biology, law, and philosophy. Every individual contributes significantly to the growth of a civilization. Society is a multifaceted concept that is shaped and influenced by a wide range of different things, including human behaviors, attitudes, and ideas. The culture, morals, and beliefs of others as well as the general direction and trajectory of the society can all be influenced and shaped by an individual's activities. Etymology From the 15th century and earlier (and also today within the fields of statistics and metaphysics) ''individual'' meant " indivisible", typically describing any numerically singular thing, but sometimes meanin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laboratory Rats
Laboratory rats or lab rats are strain (biology), strains of the rat subspecies ''Rattus norvegicus domestica'' (Domestic Norwegian rat) which are bred and kept for scientific research. While Animal testing on rodents, less commonly used for research than laboratory mice, rats have served as an important animal model for research in psychology and biomedical science, and "lab rat" is commonly used as an idiom for a test subject. Origins of rat breeding In 18th-century Europe, wild brown rats (''Rattus norvegicus'') ran rampant and this infestation fueled the industry of rat-catching. Rat-catchers would not only make money by trapping the rodents, but also by selling them rat meat, for food or, more commonly, for rat-baiting. Rat-baiting was a popular sport, which involved filling a pit with rats and timing how long it took for a terrier to kill them all. Over time, breeding the rats for these contests may have produced color variations, notably the albino rat, albino and hoode ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cloned Animals
Cloning is the process of producing individual organisms with identical genomes, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction; this reproduction of an organism by itself without a mate is known as parthenogenesis. In the field of biotechnology, cloning is the process of creating cloned organisms of Cell (biology), cells and of DNA fragments. The artificial cloning of organisms, sometimes known as reproductive cloning, is often accomplished via somatic-cell nuclear transfer (SCNT), a cloning method in which a viable embryo is created from a somatic cell and an egg cell. In 1996, Dolly (sheep), Dolly the sheep achieved notoriety for being the first mammal cloned from a somatic cell. Another example of artificial cloning is molecular cloning, a technique in molecular biology in which a single living cell is used to clone a large population of cells that contain identical DNA molecules. In bioethics, there are a vari ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
2002 In France
Events from the year 2002 in France. Incumbents * President: Jacques Chirac * Prime Minister: Lionel Jospin (until 7 May), Jean-Pierre Raffarin (starting 7 May) Events *1 January – The Euro Currency officially became the legal tender for France, along with the other European Union (EU) Eurozone member area countries, replacing the French franc by being introduced physically with the official launch of the currency coins and banknotes. *6 March – France agrees to return the remains of Saartjie Baartman to South Africa. *21 April – first round of the presidential election: Jacques Chirac and Jean-Marie le Pen poll the most votes. Two weeks of demonstrations against the National Front follow. *5 May – second round of the presidential election. Jacques Chirac returns for a second term as President of the French Republic. *6 May – nomination of Jean-Pierre Raffarin for the post of Prime Minister. *9 June – first round of the legislative elections *16 June – sec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Cloned Animals
Banteng *A Javan banteng calf was cloned from frozen cells using a cow as a surrogate, delivered via c-section on April 1, 2003, then hand raised at the San Diego Wild Animal Parks Infant Isolation Unit. It died due to an injury when it was less than seven years old, about half the normal life of a banteng. Black-footed ferret Elizabeth Ann, a black-footed ferret female, was born on December 10, 2020, at the Fish and Wildlife Service's Black-footed Ferret Conservation Center in Colorado. She is a clone of a female named Willa, who died in the mid-1980s and left no living descendants. Brown rat *Ralph (male, 2003) Camel Injaz, a cloned female dromedary camel, was born in 2009 at the Camel Reproduction Center in Dubai, United Arab Emirates after an "uncomplicated" gestation of 378 days. Carp Embryologist Tong Dizhou successfully inserted the DNA from a male Asian carp into the egg of a female Asian carp to create the first fish clone in 1963. Cat *In 2001, scientists at Tex ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jouy-en-Josas
Jouy-en-Josas () is a commune in the Yvelines department in the Île-de-France region in Northern France. It is located in the southwestern outer suburbs of Paris, from the centre of Paris, on the departmental border with Essonne. Jouy-en-Josas is home to the main campus of HEC School of Management (HEC Paris). Geography Jouy-en-Josas is four kilometres to the south-east of Versailles, and 19r km to the south-west of Paris, in the middle of the valley of the Bièvre river. A town with nearly eight thousand inhabitants, half of Jouy-en-Josas is covered by forest. The communes that surround Jouy-en-Josas are Vélizy-Villacoublay, to the north-east, Bièvres to the east, Saclay to the south, Toussus-le-Noble to the extreme south-west, Les Loges-en-Josas to the west, Buc to the north-west and Versailles to the north-north-west. History ''Jouy'' is a direct translation of Latin '' gaudium'', both meaning "joy". Josas was the ancient name of an archdiaco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
France
France, officially the French Republic, is a country located primarily in Western Europe. Overseas France, Its overseas regions and territories include French Guiana in South America, Saint Pierre and Miquelon in the Atlantic Ocean#North Atlantic, North Atlantic, the French West Indies, and List of islands of France, many islands in Oceania and the Indian Ocean, giving it Exclusive economic zone of France, one of the largest discontiguous exclusive economic zones in the world. Metropolitan France shares borders with Belgium and Luxembourg to the north; Germany to the northeast; Switzerland to the east; Italy and Monaco to the southeast; Andorra and Spain to the south; and a maritime border with the United Kingdom to the northwest. Its metropolitan area extends from the Rhine to the Atlantic Ocean and from the Mediterranean Sea to the English Channel and the North Sea. Its Regions of France, eighteen integral regions—five of which are overseas—span a combined area of and hav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
People's Republic Of China
China, officially the People's Republic of China (PRC), is a country in East Asia. With population of China, a population exceeding 1.4 billion, it is the list of countries by population (United Nations), second-most populous country after India, representing 17.4% of the world population. China spans the equivalent of five time zones and Borders of China, borders fourteen countries by land across an area of nearly , making it the list of countries and dependencies by area, third-largest country by land area. The country is divided into 33 Province-level divisions of China, province-level divisions: 22 provinces of China, provinces, 5 autonomous regions of China, autonomous regions, 4 direct-administered municipalities of China, municipalities, and 2 semi-autonomous special administrative regions. Beijing is the country's capital, while Shanghai is List of cities in China by population, its most populous city by urban area and largest financial center. Considered one of six ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
