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Spirostomum
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Caudatum
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Subtilis
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Dharwarensis
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Minus
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Semivirescens
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Teres
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Yagiui
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Sp - 160x (12541441423)
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirostomum Ambiguum
''Spirostomum'' is a genus of ciliated protists that belongs to the class Heterotrichea. It is known for being very contractile.Fernandes, N.M.; da Silva Neto, I.D. (2013). “Morphology and 18S rDNA gene sequence of ''Spirostomum minus'' and ''Spirostomum teres'' (Ciliophora: Heterotrichea) from Rio de Janeiro, Brazil”. ''Zoologia'' 30: 72-79doi: 10.1590/S1984-46702013000100009 Having been first identified by Christian Gottfried Ehrenberg in 1834, further research has identified eight additional true morphospecies.Bishop, A. (1923). “Some observations upon ''Spirostomum ambiguum'' (Ehrenberg)”. ''Journal of Cell Science'' 267: 391-434doi: 10.1242/jcs.s2-67.267.391/ref>Fokin, S. (2004). “A brief history of ciliate studies (late XVII the first third of the XX century)”''Protistology'' 3: 283-296./ref>Boscaro, V.; Carducci, D.; Barbieri, G.; Senra, M.V.X.; Andreoli, I.; Erra, F.; Petroni, G.; Verni, F.; Fokin, S.I. (2014). “Focusing on genera to improve species identifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Christian Gottfried Ehrenberg
Christian Gottfried Ehrenberg (19 April 1795 – 27 June 1876) was a German naturalist, zoologist, comparative anatomist, geologist, and microscopist. Ehrenberg was an evangelist and was considered to be of the most famous and productive scientists of his time. Early collections The son of a judge, Christian Gottfried Ehrenberg was born in Delitzsch, near Leipzig. He first studied theology at the University of Leipzig, then medicine and natural sciences in Berlin and became a friend of the famous explorer Alexander von Humboldt. In 1818, he completed his doctoral dissertation on fungi, ''Sylvae mycologicae Berolinenses.'' In 1820–1825, on a scientific expedition to the Middle East with his friend Wilhelm Hemprich, he collected thousands of specimens of plants and animals. He investigated parts of Egypt, the Libyan Desert, the Nile valley and the northern coasts of the Red Sea, where he made a special study of the corals. Subsequently, parts of Syria, Arabia and Abyss ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silver
Silver is a chemical element with the Symbol (chemistry), symbol Ag (from the Latin ', derived from the Proto-Indo-European wikt:Reconstruction:Proto-Indo-European/h₂erǵ-, ''h₂erǵ'': "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal. The metal is found in the Earth's crust in the pure, free elemental form ("native silver"), as an alloy with gold and other metals, and in minerals such as argentite and chlorargyrite. Most silver is produced as a byproduct of copper, gold, lead, and zinc Refining (metallurgy), refining. Silver has long been valued as a precious metal. Silver metal is used in many bullion coins, sometimes bimetallism, alongside gold: while it is more abundant than gold, it is much less abundant as a native metal. Its purity is typically measured on a per-mille basis; a 94%-pure alloy is described as "0.940 fine". As one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Meiosis
Meiosis (; , since it is a reductional division) is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, such as sperm or egg cells. It involves two rounds of division that ultimately result in four cells with only one copy of each chromosome ( haploid). Additionally, prior to the division, genetic material from the paternal and maternal copies of each chromosome is crossed over, creating new combinations of code on each chromosome. Later on, during fertilisation, the haploid cells produced by meiosis from a male and female will fuse to create a cell with two copies of each chromosome again, the zygote. Errors in meiosis resulting in aneuploidy (an abnormal number of chromosomes) are the leading known cause of miscarriage and the most frequent genetic cause of developmental disabilities. In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells, each with half the number of chr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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