This mutation-selection balance represents high-turnover source-sink dynamics with respect to the replicator quasi-species.
Despite the similar overall amino acid composition among the horizons, proportions of glutamine generally increased with depth and were generally greater in the mineral horizons than in the BOHs, suggesting root exudation or fine root turnover as an amino acid source.
ABI is also suffering from turnover, according to a source.
The generational diversity found in the ICU environment can also be a source of turnover of staff.
High metabolic turnover is a major source of free radicals and oxidative damage, other important players in the aging process.
When the number of colonizers is large and from multiple source populations, turnover will have a homogenizing effect decreasing differentiation (Slatkin 1977).
At the individual level, change, whether in management, ownership, or employee turnover, can be a source of distress and as such a barrier to KM [ 37, 61, 85, 91].
This is unsurprising given the half-life and slow turnover of the main source of protein, red blood cells, whose half-life is considerably longer than the time of the dietary intervention.
Proinflammatory T helper cells are now considered potent modulators of bone turnover and are important sources of osteoclastogenic cytokines under inflammatory conditions.
An analysis of the contribution of different fuels and metabolic pathways in proliferating MCF7 breast cancer cells has demonstrated that 65% of the total ATP turnover is from unidentified sources (Guppy et al, 2002).
Bone turnover is considered the major source of circulating lead in absence of ongoing external sources of exposure (Hu et al. 1998).
