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An overview is given on the experimental evidence suggesting that the magnitude of the initial fluctuations increases with cell size. For sufficiently thick cells, the magnitude is also shown to decrease over the entire time of the experiment, so that a st ...
A general method for the specific and covalent labeling of fusion proteins in vivo is described. The approach is based on the unusual mechanism of the human DNA repair protein O6-alkylguanine-DNA alkyl-transferase, which irreversibly transfers an alkyl gro ...
Dielec. spectroscopy was applied to two industrial high cell d. culture processes and used to det. online the concn. of CHO cells immobilized on macroporous microcarriers in a stirred bioreactor and in a packed-bed of disk carriers. The cell concn. predict ...
Studies of chimeric mice have disclosed that the stem cell hierarchy in the small intestinal epithelium is established during formation of its proliferative units (crypts of Lieberkuhn). This process involves a selection among several multipotential progen ...
The intraerythrocytic asexual cycle of the malarial parasite is complex and atypical: during schizogony the parasite undergoes multiple rounds of DNA replication and asynchronous nuclear division without cytokinesis. This cell cycle deviates from the class ...
Fluorescent proteins expressed in mammalian cells can be quantified quickly and noninvasively with a standard fluorescence plate reader. We have previously exploited this quality in cell growth assessment (Hunt et al., 1999b). In this work, different CHO c ...
Cysteine-dependent aspartic proteases (caspases) are a family of enzymes which play a crucial role in apoptosis. Caspases accumulate in eukaryotic cells in the form of low-activity proenzyme precursors. Proteolytic cleavage of specific sites triggers confo ...
Accurate spindle positioning is crucial for spatial control of cell division. During metazoan development, coordination between polarity cues and spindle position also ensures correct segregation of cell fate determinants. Converging evidence indicates tha ...
Various methods exist to transfect mammalian cells in culture. It is generally accepted that individual methods have to be optimized for each of the cell lines or cell types used. Despitethe use of optimized protocols, significant day-to-day variationsin t ...
Notch proteins influence cell fate decisions in many developmental systems. During lymphoid development, Notch1 signaling is essential to direct a bipotent T/B precursor toward the T cell fate, but the role of Notch1 at later stages of T cell development r ...