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Spiroptera Carcinoma
''Gongylonema neoplasticum'' (more famously as ''Spiroptera carcinoma'') is a roundworm parasite of rats. It was discovered by a Danish physician Johannes Fibiger in 1907. Fibiger and Hjalmar Ditlevsen made a formal description in 1914 as ''Spiroptera'' (''Gongylonema'') ''neoplastica''. But Ditlevsen gave the final valid name ''Gongylonema neoplasticum'' in 1918. The nematode is transmitted between rats and cockroaches. When Fibiger discovered the nematode in the stomach of rats, he found that the stomach had tumours. Inspired by the possible link of the nematode and tumour, he performed experiments to induce tumours with nematode infection. He published his experimental success in 1913. The nematode experiment earned Fibiger the 1926 Nobel Prize in Physiology or Medicine, but under controversial circumstances. Moreover, it was later proven that Fibiger came to a wrong conclusion, that the nematode is not carcinogenic. Erling Norrby, who had served as the Permanent Secretary of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematode
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-Parasitism, parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with Arthropod, arthropods, Tardigrade, tardigrades and other moulting animalia, animals in the clade Ecdysozoa, and unlike platyhelminthe, flatworms, have tubular digestion, digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moulting
In biology, moulting (British English), or molting (American English), also known as sloughing, shedding, or in many invertebrates, ecdysis, is the manner in which an animal routinely casts off a part of its body (often, but not always, an outer layer or covering), either at specific times of the year, or at specific points in its life cycle. In medieval times it was also known as "mewing" (from the French verb "muer", to moult), a term that lives on in the name of Britain's Royal Mews where the King's hawks used to be kept during moulting time before becoming horse stables after Tudor times. Moulting can involve shedding the Epidermis (skin), epidermis (skin), pelage (hair, feathers, fur, wool), or other external layer. In some groups, other body parts may be shed, for example, the entire exoskeleton in arthropods, including the wings in some insects. Examples In birds In birds, moulting is the periodic replacement of feathers by shedding old feathers while producing new o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discovery And Invention Controversies
Discovery may refer to: * Discovery (observation), observing or finding something unknown * Discovery (fiction), a character's learning something unknown * Discovery (law), a process in courts of law relating to evidence Discovery, The Discovery or Discoveries may also refer to: Film and television * The Discovery (film), ''The Discovery'' (film), a 2017 British-American romantic science fiction film * Discovery Channel, an American TV channel owned by Warner Bros. Discovery * Discovery (Canadian TV series), ''Discovery'' (Canadian TV series), a 1962–1963 Canadian documentary television program * Discovery (Irish TV series), ''Discovery'' (Irish TV series), an Irish documentary television programme * Discovery (UK TV programme), ''Discovery'' (UK TV programme), a British documentary television programme * Discovery (U.S. TV series), ''Discovery'' (U.S. TV series), a 1962–1971 American television news program * ''Star Trek: Discovery'', an American television series ** USS D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematodes Described In 1918
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega journal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nematodes Described In 1914
The nematodes ( or grc-gre, Νηματώδη; la, Nematoda) or roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as Helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum. Nematode species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega journal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
