منابع مشابه
The Biology and Psychology of Crowding in Man and Animals
Crowding is an ecologic and psychologic aspect of population density which produces a significant impact upon the behavior and physiology both of individuals and of social groups. In animal populations, an optimal level of crowding is often necessary for favorable social interactions, reproduction, and normal group organization. Beyond optimal levels, however, crowding may become a detrimental ...
متن کاملThe Biology and Psychology of Crowding in Man and Animals
Crowding is an ecologic and psychologic aspect of population density which produces a significant impact upon the behavior and physiology both of individuals and of social groups. In animal populations, an optimal level of crowding is often necessary for favorable social interactions, reproduction, and normal group organization. Beyond optimal levels, however, crowding may become a detrimental ...
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We review gases that can affect oxidative stress and that themselves may be radicals. We discuss O(2) toxicity, invoking superoxide, hydrogen peroxide, and the hydroxyl radical. We also discuss superoxide dismutase (SOD) and both ground-state, triplet oxygen ((3)O(2)), and the more energetic, reactive singlet oxygen ((1)O(2)). Nitric oxide ((*)NO) is a free radical with cell signaling functions...
متن کاملMacrophage biology and immunology: man is not a mouse.
A recent article by Shibata et al. [1] and an interview with the senior investigator Kobayashi [2], both in the October 2006 issue of Journal of Leukocyte Biology, discuss the role of macrophage-derived NO in the clearance of apoptotic cells. We were surprised that neither in the original paper nor in the accompanying interview was it discussed that these results rely entirely on data obtained ...
متن کاملThe Science of Biology and the Future of Man.
The Science of Biology and the Future of Man: PROSpecial Articles: FESSOR ANTON J. CARLSON ............................................................ 437 On the Rh and Other Blood Factors in Japanese: DR. ROBERT K. WALLER and DR. PHILIP LEVINE. The Importance of Plants: PROFESSOR WILLIAM J. On the Specificity of Choline Esterase in Nervous BOBBINS.............. 440 Tissue: DR. DAVID NACHMANSO...
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ژورنال
عنوان ژورنال: Nature
سال: 1975
ISSN: 0028-0836,1476-4687
DOI: 10.1038/256349a0