Mostrando 4,321 - 4,340 Resultados de 403,057 Para Buscar '"Biology"', tiempo de consulta: 0.98s Limitar resultados
  1. 4321
  2. 4322
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  5. 4325
  6. 4326
    “…The presence of antimicrobial peptides (AMPs) in saliva may be a biological factor that contributes to susceptibility or resistance to caries. …”
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  7. 4327
  8. 4328
    por Kedem, Ora, Essig, Alvin
    Publicado 1965
    “…Precise evaluation of permeability of biological tissues is often prevented by imprecise knowledge of operative forces. …”
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  9. 4329
    “…The coordinating chemistry of lanthanides, relevant to the biological, biochemical and medical aspects, makes a significant contribution to understanding the basis of application of lanthanides, particularly in biological and medical systems. …”
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  10. 4330
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  12. 4332
  13. 4333
  14. 4334
    “…A series of silyl, germyl and alkyl substituted trifluoroacetylfurans has been synthesized under Friedel-Crafts electrophilic acylation conditions. Biological investigations have demonstrated that germyl derivatives of trifluoroacetylfuran are more toxic than the silicon analogues. 5-Triethylgermyl-2-trifluoroacetylfuran was the most toxic compound (LD(50), 11.2 mg kg(-1), i.p. for white mice), 200 times more toxic than the silicon analogue. 5-t-Butyl- and 5-trimethylsilyl-2-trifluroacetylfuran prolong the duration of ethanol anaesthesia by 220 and 140%. 5-Triethylgermyl-2-trifluroacetylfuran exibited high anesthetic activity in hexobarbital test (prolonged the duration by 137%). …”
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  15. 4335
    “…However, since blood sIL-2R levels may correlate with disease progression and/or response to therapy, their measurement may be a useful index of activity and extent of disease. The precise biological role of the soluble form of the IL-2R is still a matter of debate. …”
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  16. 4336
  17. 4337
    “…METHODOLOGY/PRINCIPAL FINDINGS: To study the link between fetal and maternal biological clocks, we investigated the effects of cycles of maternal food availability on the rhythms of Per1 gene expression in the fetal suprachiasmatic nucleus (SCN) and liver using a transgenic rat model whose tissues express luciferase in vitro. …”
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  18. 4338
    “…This resource aims to integrate the traditional scientific publication directly into existing biological databases, thus obviating the need for a user to search in multiple locations for information relating to a specific item of interest, for example published experimental results associated with a particular biological database entry. …”
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