|
|
|
| Registros recuperados: 176 | |
|
| |
|
| |
|
|
| Ribeiro,L.A.; Iglesias,L.P.; Silva,F.O.C.; Silva,Z.; Santos,L.A.; Paula,Y.H.; Magalhães,H.I.R.; Barros,R.A.C.. |
| ABSTRACT This work aimed to describe the origin, distribution, and ramifications of the ischiadicus nerve in the giant anteater and to provide anatomical data which could explain not only the evolutionary aspects but also provide important information for other related works. For the present study, four specimens were used, prepared by perfusion of 10% formaldehyde solution via the femoral artery, for conservation and dissection. The origin of the right and left ischiadicus nerves in the giant anteater from the ventral ramification of the third lumbar (L3) and the first (S1), second (S2), and third (S3) sacral spinal nerves. These nerves were symmetrical in all animals studied. The distribution and ramification occurred to the superficial, middle, and deep... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Myrmecophagidae; Pilosa; Evolution; Innervations. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352019000401149 |
| |
|
|
| CORNISH-BOWDEN,ATHEL; CÁRDENAS,MARÍA LUZ. |
| Most biologists outside the USA and a few other countries, like Australia and Canada, are under the impression that the threat to the teaching of biology represented by creationism does not concern them directly. This is unfortunately no longer true: the recent growth of creationism, especially in its pseudo-scientific manifestation known as "intelligent design", has been obvious in several countries of Western Europe, especially the UK, Germany and Poland, and it is beginning to be noticeable in Brazil, and maybe elsewhere in Latin America. The problem is complicated by the fact that there are not just two possibilities, evolution and creationism, because creationism comes in various incompatible varieties. Turkey is now a major source of creationist... |
| Tipo: Journal article |
Palavras-chave: Education; Creationism; Intelligent design; Fundamentalism; Evolution; Natural selection. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602007000200002 |
| |
|
|
| CARREÑO,JUAN E; HANSEN,FERNANDO; IRARRÁZABAL,MATÍAS; PHILIPPI,RODOLFO; CORREA,MATÍAS; BORJA,FRANCISCO; ADRIASOLA,CRISTÓBAL; SILVA,FRANCISCO; SERANI,ALEJANDRO. |
| The so-called theory of intelligent design (ID) has gained a growing reputation in the Anglo-Saxon culture, becoming a subject of public debate. The approaches that constitute the core of this proposal, however, have been poorly characterized and systematized. The three most significant authors of ID are certainly Michael Behe, William Dembski and Stephen Meyer. Beyond the differences that can be distinguished in the work of each of them, the central fact in their arguments is the complexity of living organisms, which according to these authors, escapes any kind of natural explanation. In effect, according to the authors of ID, the irreducible complexity that can be detected in the natural world would allow to infer design in a scientifically valid way,... |
| Tipo: Journal article |
Palavras-chave: Epistemology; Evolution; Intelligent design; Science. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602009000200011 |
| |
|
| |
|
|
| Olavarria,Viviana Nilla; Gomes,Alline do Nascimento; Kruschewsky,Ramon de Almeida; Galvão-Castro,Bernardo; Grassi,Maria Fernanda Rios. |
| INTRODUCTION: Variations in human T cell lymphotropic virus type 1 (HTLV-1) proviral load (PVL) in infected individuals over time are not well understood. Objective: To evaluate the evolution of proviral load in asymptomatic individuals and HAM/TSP patients in order to help determine periodicity for measuring proviral load. METHODS: A group of 104 HTLV-1 infected patients, followed at the HTLV reference center in Salvador, Brazil, were included in the study (70 asymptomatic and 34 HTLV-1-associated myelopathy/tropical spastic paraparesis (HAM/TSP) patients). HTLV-1 PVL was measured using real-time polymerase chain reaction (PCR) at baseline and again at another point, either < 12 months, between 12-24 months, or > 24 months. RESULTS: HAM/TSP... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Asymptomatic; Evolution; HTLV-1; Proviral load; HAM/TSP. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000400008 |
| |
|
|
| Awasthi,Gauri; Singh,Suchita; Dash,A.P.; Das,Aparup. |
| TNF-α is an important human cytokine that imparts dualism in malaria pathogenicity. At high dosages, TNF-α is believed to provoke pathogenicity in cerebral malaria; while at lower dosages TNF-α is protective against severe human malaria. In order to understand the human TNF-α gene and to ascertain evolutionary aspects of its dualistic nature for malaria pathogenicity, we characterized this gene in detail in six different mammalian taxa. The avian taxon, Gallus gallus was included in our study, as TNF-α is not present in birds; therefore, a tandemly placed duplicate of TNF-α (LT-α or TNF-β) was included. A comparative study was made of nucleotide length variations, intron and exon sizes and number variations, differential compositions of coding to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malaria; TNF-α; TNF-β; Evolution; Computational analyses. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702008000500006 |
| |
|
| |
|
|
| Circadian organization means the way in which the entire circadian system above the cellular level is put together physically and the principles and rules that determine the interactions among its component parts which produce overt rhythms of physiology and behavior. Understanding this organization and its evolution is of practical importance as well as of basic interest. The first major problem that we face is the difficulty of making sense of the apparently great diversity that we observe in circadian organization of diverse vertebrates. Some of this diversity falls neatly into place along phylogenetic lines leading to firm generalizations: i) in all vertebrates there is a "circadian axis" consisting of the retinas, the pineal gland and the... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Circadian rhythms; Evolution; Vertebrates; Pineal; SCN; Retina; Melatonin. |
| Ano: 1997 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1997000300003 |
| |
|
| |
|
|
| Silva,L.B.; Santos,S.S.S.; Azevedo,C.R.; Cruz,M.A.L.; Venâncio,T.M.; Cavalcante,C.P.; Uchôa,A.F.; Astolfi Filho,S.; Oliveira,A.E.A.; Fernandes,K.V.S.; Xavier-Filho,J.. |
| We report the detection of insulin-like antigens in a large range of species utilizing a modified ELISA plate assay and Western blotting. We tested the leaves or aerial parts of species of Rhodophyta (red alga), Bryophyta (mosses), Psilophyta (whisk ferns), Lycopodophyta (club mosses), Sphenopsida (horsetails), gymnosperms, and angiosperms, including monocots and dicots. We also studied species of fungi and a cyanobacterium, Spirulina maxima. The wide distribution of insulin-like antigens, which in some cases present the same electrophoretic mobility as bovine insulin, together with results recently published by us on the amino acid sequence of an insulin isolated from the seed coat of jack bean (Canavalia ensiformis) and from the developing fruits of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insulin; Insulin-like; Antigens; Evolution; Plants; Cyanobacteria; Algae; Fungi. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2002000300004 |
| |
|
| |
|
| |
|
|
| Xavier-Filho,José; Oliveira,Antônia Elenir A.; Silva,Luciana Belarmindo da; Azevedo,Cassiana Rocha; Venâncio,Thiago Motta; Machado,Olga Lima T.; Oliva,Maria Luiza; Fernandes,Kátia Valevski S.; Xavier-Neto,José. |
| The presence of insulin in plants is not accepted by the scientific community in general. In this review we discuss this paradigm and retrieve information that strongly suggests that insulin is indeed found in plants. We present results, which indicate that a protein molecule with the same amino acid sequence as bovine insulin is expressed in leguminous plants. Additionally, we provide evidence that proteins associated with insulin signalling pathways in vertebrates are also found in association with insulin-like molecules in plants. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insulin; Glucokinin; Peptide hormone; Plants; Amino acid sequence; Evolution. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202003000200002 |
| |
|
| |
| Registros recuperados: 176 | |
|
|
|
