Mostrando 1,361 - 1,380 Resultados de 3,549 Para Buscar '"amphibian"', tiempo de consulta: 0.21s Limitar resultados
  1. 1361
    “…Transtubular and peritubular face electrical potential differences (P.D.) of the proximal tubules of the kidney of the amphibian Necturus maculosus have been measured in situ. …”
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  2. 1362
    “…We previously reported that a primitive vertebrate, the Mexican axolotl (Amphibian, Urodela) synthesizes two classes of immunoglobulins. …”
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  3. 1363
    “…Huia cavitympanum, an endemic Bornean frog, is the first amphibian species known to emit exclusively ultrasonic (i.e., >20 kHz) vocal signals. …”
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  4. 1364
  5. 1365
    “…Collectively, these observations indicate that in L-cones, unlike amphibian rods where the dominant time constant is insensitive to [Ca(2+)], pigment quenching rate limits recovery and provides an additional mechanism for modulating the cone response during light adaptation.…”
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  6. 1366
    por Aruga, Jun, Mikoshiba, Katsuhiko
    Publicado 2011
    “…Furthermore, mammalian Zic1 and Zic3 have been found to be neural-cell-fate-inducing and pluripotency-maintaining factors, respectively, leading us to the intriguing question of whether the mechanism underlying amphibian neuroectodermal differentiation is applicable to mammals. …”
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  7. 1367
    “…Aquatic vertebrates (fish: Siberian sturgeon and amphibian: Bullfrog tadpoles) were used as target species. …”
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  8. 1368
    “…Furthermore, the healing employs a blastema-like structure similar to that seen in amphibian regenerating tissue. Cells from the MRL mouse display DNA damage, cell cycle G2/M arrest, and a reduced level of p21(CIP1/WAF). …”
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  9. 1369
    por Smith, Stuart J., Mohun, Timothy J.
    Publicado 2011
    “…Together, these results demonstrate that amphibian heart formation depends on the presence and activity of the macrophage population, indicating that these cells may be an important source of growth cues necessary for early cardiac morphogenesis.…”
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  10. 1370
    “…In this study, we used ancient and modern mitochondrial haplotype diversity to model the effective size of this amphibian population through recent geological time and to assess past responses to climatic changes in the region. …”
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  11. 1371
    “…Amphibians worldwide are experiencing devastating declines, some of which are due to the amphibian chytrid fungus (Batrachochytrium dendrobatidis, Bd). …”
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  12. 1372
    “…Onconase® is a highly cytotoxic amphibian homolog of Ribonuclease A. Here, we describe the construction of circularly permuted Onconase® variants by connecting the N- and C-termini of this enzyme with amino acid residues that are recognized and cleaved by the human immunodeficiency virus protease. …”
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  13. 1373
    “…These results suggest that either input is sufficient to maintain the intrinsically generated spontaneous activity and that patterned spontaneous activity results from input from multisensory systems. Thus, the amphibian midbrain differs from the mammalian visual system, whose spontaneous activity is controlled by retinal waves.…”
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  14. 1374
    “…We examined how nutrient deprivation (ND) affects stem and progenitor cells in the ciliary marginal zone (CMZ) of the amphibian retina, a well-characterised neurogenic niche. …”
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  15. 1375
    por Popova, E.
    Publicado 2014
    “…The role of GABAergic system in establishing the ON-OFF asymmetry concerning the time course and absolute and relative sensitivity of the ERG responses under different conditions of light adaptation in amphibian retina is also discussed.…”
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  16. 1376
    “…Unlike the rapidly inactivating Na(V)s that generate short APs in neurons, TPC3 has a high activation threshold, activates slowly, and does not inactivate—three properties that help generate long-lasting APs and guard the membrane against unintended perturbation. In amphibian oocytes, TPC3 forms a channel similar to channels induced by depolarization and sperm entry into eggs. …”
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  17. 1377
    por Koprivnikar, Janet, Penalva, Laura
    Publicado 2015
    “…While it is increasingly evident that this “ecology of fear” is important to understand for natural enemy-victim relationships, fear responses of hosts to the threat of infection by a parasite are relatively unknown. We examined larval amphibian (Lithobates pipiens) foraging choices by experimentally manipulating the presence of cues relating to predator (larval odonate) or parasite (the trematode Ribeiroia ondatrae) threats. …”
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  18. 1378
    “…Known as lethal pathogens, Ranaviruses have been identified in diseased fish, amphibians (including Chinese giant salamander Andrias davidianus, the world’s largest amphibian) and reptiles, causing organ necrosis and systemic hemorrhage. …”
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  19. 1379
  20. 1380
    “…In recent times, several new species of amphibians have been described from India. Many of these discoveries are from biodiversity hotspots or from within protected areas. …”
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