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Polyhedrin
''For the three dimensional shape, see Polyhedron'' Polyhedrins are a type of viral protein that form occlusion bodies (also called polyhedra), large structures that protect the virus particles from the outside environment for extended periods until they are ingested by susceptible insects. They occur in various viruses including nuclear polyhedrosis viruses (NPVs) and granulovirus ''Betabaculovirus'' is a genus of viruses, in the family ''Baculoviridae''. Arthropods serve as natural hosts. There are 26 species in this genus. Taxonomy The following species are assigned to the genus: * '' Adoxophyes orana granulovirus'' * ...es (GVs). GVs contain one virus particle per occlusion, whereas NPVs package about 5–15 viruses in each occlusion. References {{Reflist Protein families ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baculovirus
''Baculoviridae'' is a family of viruses. Arthropod Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arth ...s, among the most studied being Lepidoptera, Hymenoptera and Diptera, serve as natural hosts. Currently, 85 Virus classification, species are placed in this family, assigned to four genera. Baculoviruses are known to infect insects, with over 600 host species having been described. Immature (larval) forms of lepidopteran species (moths and butterflies) are the most common hosts, but these viruses have also been found infecting sawfly, sawflies, and mosquitoes. Although baculoviruses are capable of entering mammalian cells in culture, they are not known to be capable of replication in mammalian or other vertebrate animal cells. Starting in the 1940s, they were used and studied wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polyhedron
In geometry, a polyhedron (plural polyhedra or polyhedrons; ) is a three-dimensional shape with flat polygonal faces, straight edges and sharp corners or vertices. A convex polyhedron is the convex hull of finitely many points, not all on the same plane. Cubes and pyramids are examples of convex polyhedra. A polyhedron is a 3-dimensional example of a polytope, a more general concept in any number of dimensions. Definition Convex polyhedra are well-defined, with several equivalent standard definitions. However, the formal mathematical definition of polyhedra that are not required to be convex has been problematic. Many definitions of "polyhedron" have been given within particular contexts,. some more rigorous than others, and there is not universal agreement over which of these to choose. Some of these definitions exclude shapes that have often been counted as polyhedra (such as the self-crossing polyhedra) or include shapes that are often not considered as valid polyhedr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virus
A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1892 article describing a non-bacterial pathogen infecting tobacco plants and the discovery of the tobacco mosaic virus by Martinus Beijerinck in 1898,Dimmock p. 4 more than 9,000 virus species have been described in detail of the millions of types of viruses in the environment. Viruses are found in almost every ecosystem on Earth and are the most numerous type of biological entity. The study of viruses is known as virology, a subspeciality of microbiology. When infected, a host cell is often forced to rapidly produce thousands of copies of the original virus. When not inside an infected cell or in the process of infecting a cell, viruses exist in the form of independent particles, or ''virions'', consisting of (i) the genetic material, i. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Occlusion Bodies
Occlusion may refer to: Health and fitness * Occlusion (dentistry), the manner in which the upper and lower teeth come together when the mouth is closed * Occlusion miliaria, a skin condition * Occlusive dressing, an air- and water-tight trauma dressing used in first aid * Vascular occlusion, blockage of a blood vessel ** Vascular occlusion training, or blood flow restriction training, a technique done by some bodybuilders Other uses * Ambient occlusion, a shading method used in 3D computer graphics * Occluded front, part of cyclone formation * Occlusion culling, or hidden surface determination, a 3D computer graphics process * Occlusion effect, an audio phenomenon * Occlusive, in phonetics See also * Occlusion training (other) * Occultation An occultation is an event that occurs when one object is hidden from the observer by another object that passes between them. The term is often used in astronomy, but can also refer to any situation in which an object in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Granulovirus
''Betabaculovirus'' is a genus of viruses, in the family ''Baculoviridae''. Arthropods serve as natural hosts. There are 26 species in this genus. Taxonomy The following species are assigned to the genus: * '' Adoxophyes orana granulovirus'' * '' Agrotis segetum granulovirus'' * ''Artogeia rapae granulovirus'' * '' Choristoneura fumiferana granulovirus'' * ''Clostera anachoreta granulovirus'' * '' Clostera anastomosis granulovirus A'' * '' Clostera anastomosis granulovirus B'' * ''Cnaphalocrocis medinalis granulovirus'' * ''Cryptophlebia leucotreta granulovirus'' * ''Cydia pomonella granulovirus'' * '' Diatraea saccharalis granulovirus'' * '' Epinotia aporema granulovirus'' * ''Erinnyis ello granulovirus'' * '' Harrisina brillians granulovirus'' * '' Helicoverpa armigera granulovirus'' * ''Lacanobia oleracea granulovirus'' * ''Mocis latipes granulovirus'' * ''Mythimna unipuncta granulovirus A'' * ''Mythimna unipuncta granulovirus B'' * ''Phthorimaea operculella granulovirus'' * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
