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digestibility of the protein sources present in at the neurohumoral
digestibility of the protein sources present in at the neurohumoral

... A clear distinction must be performed between pharmacology and physiology especially for the relationship between CCK activity and CCK receptor expression. The experiments dealing with mechanisms at the cell level must take into account the in vivo physiological reality. ...
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... muscle transcription factors. When the authors injected nuclei from a range of mouse cell types into Xenopus oocytes, they found that muscle gene transcription was activated to almost the same extent as in muscle cells. This transcriptional activation occurred independently of maternally provided My ...
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... muscle transcription factors. When the authors injected nuclei from a range of mouse cell types into Xenopus oocytes, they found that muscle gene transcription was activated to almost the same extent as in muscle cells. This transcriptional activation occurred independently of maternally provided My ...
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Ultrastructural 3D investigations of cells and cell organelles

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Programmed cell death



Programmed cell-death (or PCD) is death of a cell in any form, mediated by an intracellular program. PCD is carried out in a regulated process, which usually confers advantage during an organism's life-cycle. For example, the differentiation of fingers and toes in a developing human embryo occurs because cells between the fingers apoptose; the result is that the digits are separate. PCD serves fundamental functions during both plant and metazoa (multicellular animals) tissue development.Apoptosis and autophagy are both forms of programmed cell death, but necrosis is a non-physiological process that occurs as a result of infection or injury.Necrosis is the death of a cell caused by external factors such as trauma or infection and occurs in several different forms. Recently a form of programmed necrosis, called necroptosis, has been recognized as an alternate form of programmed cell death. It is hypothesized that necroptosis can serve as a cell-death backup to apoptosis when the apoptosis signaling is blocked by endogenous or exogenous factors such as viruses or mutations.
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