a micromanipulation technique has been developed to squeeze single mammalian cells between two parallel surfaces, and to measure simultaneously the force being imposed on a cell and its deformation.
Likewise, the load imposed on a cell by a heterologous circuit is affected by the availability of external resources, and, in the extreme, can lead to changes in cell fitness that can have deep consequence for circuit function and stability.
Such epigenetic modifications may be imposed on a tumor cell by microenvironmental pressure, such as provided by changes in oxygen levels, metabolites, or interactions with non-tumor cells.
The latter model explains the basic steady-state properties of muscle (such as the force-velocity relationship) whereas the Huxley and Simmons (1971) model accounts for the tension responses to rapid length changes imposed on a muscle cell.
As both H3K4me3 and H4K9me2 are opposing chromatin marks labeling euchromatin and heterochromatin, respectively, are present, it suggests that contradictory (active and inactive) epigenetic marks are imposed on a transgene during cell culture cultivation.
Indeed in simulations, if intermixing was prevented through delocalizing benefits (Momeni et al., 2013; Allen et al., 2013), or if intermixing was imposed on all cells through high initial cell densities, self-organization and cooperator advantage over cheaters diminished.
Another or an additional trigger could be some sort of stress imposed on A. nidulans cultures by bacterial cells.
And that blip, that period we've just come through, where programmes were filtered through charts and schedules and executive brain cells and imposed on a creative workforce, that is precisely the old-fashioned mechanics of the big American networks that HBO and company are fighting free of.
This effect could be due to the high metabolic burden imposed on the cell when two, instead of one, proteins are expressed from strong promoters.
In this case, parameter [t i ]M′ is the measure of the "noise load," imposed on the access cell by a serviced call generated in a neighboring cell.
The predicted pathways from this approach have the potential to redefine the role of AMPK as a survival master switch responding to stress imposed on the cell.
