Visual Polymorphism
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Catechol-O-methyltransferase (COMT) polymorphisms modulate working memory in individuals with schizophrenia and healthy controls
Objective: Cognitive impairment is a core feature of schizophrenia, related to dopaminergic dysfunction in the prefrontal cortex (PFC). It is hypothesized that functional single nucleotide polymorphism (SNP) rs4680 of the catechol-O-methyltransferase (COMT) gene could mediate the relationship between cognition and dopamine activity in the PFC. Other COMT SN
Rev. Bras. Psiquiatr.. Publicado em: 02/03/2017
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2. Color signals in retina and lateral geniculate nucleus of marmoset monkeys
Marmosets show sex-linked polymorphism of color vision, whereby all males and some females show dichromatic ("red-green color-blind") vision based on two classes of photoreceptor sensitive to short or medium wavelength bands. Most female marmosets by contrast express three photoreceptor classes, one sensitive to short wavelengths and two classes in the mediu
Psychol. Neurosci.. Publicado em: 2013
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3. Implicações do polimorfismo visual do sagui-do-cerrado (Callithrix penicillata - Primates) sobre a detecção de potenciais predadores
Introdução: A evolução da visão de cores dos primatas é uma questão não totalmente compreendida. Por este grupo se mostrar muito dependente da visão e devido à curiosa diferenciação entre os macacos do Novo e do Velho Mundo, com o polimorfismo visual nos platirrinos e o tricromatismo uniforme nos catarrinos, há na literatura uma busca constante
Publicado em: 2009
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4. Prospecção da influência de marcadores genéticos sobre características de crescimento, carcaça e qualidade de carne em bovinos da raça Nelore / Prospection of the genetic markers influence on growth, carcass and meat quality traits in Nellore cattle
Data on of 3,844 Nellore cattle, reared under pasture conditions on two different farms in southwestern Brazil, 1,889 of them measured by ultra-sound for carcass traits and 674 bulls finished in a feedlot for 90 to 120 days and slaughtered around 24 month of age were analyzed to verify the association with genetic markers (DNA Single nucleotide polymorphism
Publicado em: 2009
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5. Variáveis de risco associadas ao crescimento gengival em indivíduos transplantados renais sob os regimes imunossupressores de ciclosporina, tacrolimus e sirolimus
Studies regarding gingival overgrowth (GO) and its associated risk factors in renal transplant recipients under cyclosporine A (CsA) and tacrolimus (Tcr) imunosuppressive regimens have shown conflicting findings and there is no available data regarding sirolimus (Sir). Therefore, the present study wich is displayed as a review of literature and 3 scientific
Publicado em: 2009
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6. Caracterização cromática das fontes alimentares de origem vegetal do sagui-do-cerrado (Callithrix penicillata, PRIMATES)
The colour vision ability depends on the presence of different classes of retinal photoreceptors and subsequent compatible neural tracts. The basic mammalian colour vision status is dichromacy, resulting of the presence of two different types of cones. Primates and some marsupials are exceptions for this status, which may present trichromatic colour vision.
Publicado em: 2006
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7. Morphometric analysis, mimicry, and color polymorphism in five species of Chauliognathus Hentz (Coleoptera, Cantharidae)
This study presents data on morphometric variation for length and width of elytra in tive sympatric species of the genus Chauliognathus Hentz, 1830: C. flavipes Fabricius, 1781, C. octomaculatus Pie, 1915, C. expansus Waterhouse, 1878, C. fallax Germar, 1824 and C. lineatus Zwetsch & Machado, 2000. The meaning of this variation is discussed in the light of t
Revista Brasileira de Zoologia. Publicado em: 2001-09
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8. Evolution and spectral tuning of visual pigments in birds and mammals
Variation in the types and spectral characteristics of visual pigments is a common mechanism for the adaptation of the vertebrate visual system to prevailing light conditions. The extent of this diversity in mammals and birds is discussed in detail in this review, alongside an in-depth consideration of the molecular changes involved. In mammals, a nocturnal
The Royal Society.
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9. Rdh12 Activity and Effects on Retinoid Processing in the Murine Retina*
RDH12 mutations are responsible for early-onset autosomal recessive retinal dystrophy, which results in profound retinal pathology and severe visual handicap in patients. To investigate the function of RDH12 within the network of retinoid dehydrogenases/reductases (RDHs) present in retina, we studied the retinal phenotype of Rdh12-deficient mice. In vivo rat
American Society for Biochemistry and Molecular Biology.
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10. Large-Restriction-Fragment Polymorphism Analysis of Mycobacterium chelonae and Mycobacterium terrae Isolates
Mycobacterium chelonae and Mycobacterium terrae were reported to be frequently present in the environment of the Mycobacterium bovis BCG trial area in south India. Six isolates of M. chelonae and four isolates of M. terrae obtained from different sources in this area were analyzed by pulsed-field gel electrophoresis (PFGE) to examine large-restriction-fragme
American Society for Microbiology.
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11. Does colour polymorphism enhance survival of prey populations?
That colour polymorphism may protect prey populations from predation is an old but rarely tested hypothesis. We examine whether colour polymorphic populations of prey exposed to avian predators in an ecologically valid visual context were exposed to increased extinction risk compared with monomorphic populations. We made 2976 artificial pastry prey, resembli
The Royal Society.
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12. In Vitro Detection of Dissimilar Amounts of Hepatitis C Virus (HCV) Subtype-Specific RNA Genomes in Mixes Prepared from Sera of Persons Infected with a Single HCV Genotype
The level of in vitro detection of viral genomes in mixes with two different hepatitis C virus (HCV) subtypes was investigated by artificially mixing previously measured subtype-specific HCV RNA genomes. The RNAs in these mixtures were reverse transcribed and then PCR amplified by using two sets of primers corresponding to the 5′ untranslated region and di
American Society for Microbiology.