(A ) Relationship between individual gene-expression profiles and the lifespan responses across the six food levels indicates that the individual readouts are insufficient to uniquely specify lifespan responses.
We found that the average expression levels of the individual genes in each neuron alone were insufficient to either represent food inputs or uniquely specify lifespan outputs, largely due to non-monotonic expression and lifespan responses.
Interestingly, proper regulation of histone modifications is important both to maintain germ cells in their native state and to specify normal lifespan: depletion of chromatin-modifying factors was recently linked to premature differentiation of germ cells [ 11] and to longevity extension [ 12].
Unless otherwise specified, the replicative lifespan experiments were performed on yeast form cells. Lifespan of hyphal cells was determined as follows.
The term of the chair ranged from 1 year to 4 years, or was not specified due to the uncertain lifespan of HIECs.
Furthermore, the mean lifespan across all food levels were similar in all the genotypes tested, suggesting that mutations in tph-1 and daf-7 lowered the food-responsive component of longevity around a consistent, food-independent lifespan that may be specified by other environmental parameters such as temperature.
Numerous patterning mechanisms have been described to explain how the fates of distinct stem cells within a developing organ become specified, but how their functional heterogeneity is maintained throughout the lifespan of an organism remains completely unknown.
This section establishes the fact that, although recipients may receive various Federal awards during their lifespan, the individual Federal grants are awarded for a specified time period, usually one year.
Seasons were not specified.
No stipend was specified.
