منابع مشابه
Evolution of genetic and physiological mechanisms of cooperative behaviour
Emergence of cooperative behaviour requires the evolution of proximate mechanisms to overcome the conflict of fitness interests inherent in social interactions. Reciprocal trading and enforcement of help are means by which cooperation can ensue between social partners subject to conflicting fitness interests. We discuss potential routes to the evolution of mechanisms of cooperative behaviour, w...
متن کاملThe aging human lens: structure, growth, and physiological behaviour.
The aging human lens has been the subject of intense research over the past 20 years, for a number of quite disparate reasons. The fact that the incidence of cataract rises exponentially with age after 50 years provides the driving influence for much of the eVort, but the unique accessibility, homogeneity, and basic simplicity of structure of the organ itself makes it a fruitful system for fund...
متن کاملmolecular and physiological characterizations of floral scent production in rosa damascena mill.
گل محمدی (r. damascena mill.)مهمترین گونه ای است که در تولید گلاب، عطر و اسانس، در صنعت عطرسازی و دارویی کاربرد دارد. با وجود اهمیت عطر گل محمدی، پژوهش های مولکولی و بیوشیمیایی عطر گل این گونه هنوز در مراحل ابتدایی است. در این پژوهش، ویژگی های مولکولی و فیزیولوژیکی تولید عطر در گل محمدی در آزمایش های مختلف مورد بررسی قرار گرفتند. در آزمایش اول، پژوهشی به منظور بررسی تنوع شیمیایی اسانس میان 44 ت...
Physiological characteristics of NG2-expressing glial cells.
Antibodies against the chondroitin sulfate proteoglycan NG2 label a subpopulation of glial cells within the CNS, which have a small cell body and thin radiating processes. Physiological recordings from these small cells in acute brain slices have revealed that they possess unique properties, suggesting that they may comprise a class of glial cells distinct from astrocytes, oligodendrocytes, or ...
متن کاملPossible physiological function of thioltransferase in cells
We sought to study the possible physiological function of thioltransferase (TTase) in combating oxidative damage in the lens epithelial cells. The cells transfected with either TTase-containing plasmid or vector only were compared for their resistance to oxidative stress in the presence of a bolus of H2O2 (0.1 mM) for 3 h. Cells depleted of TTase activity upon cadmium treatment were also examin...
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ژورنال
عنوان ژورنال: Nature
سال: 1977
ISSN: 0028-0836,1476-4687
DOI: 10.1038/269359a0