To test one of these possibilities, the ability of corals to acquire exogenous symbionts, bleached colonies of Porites divaricata were exposed to symbiont types not normally found within this coral and symbiont acquisition was monitored.
As such, and amongst other possibilities, the ability to generate CD4+CD28null cells with repeated/chronic antigen engagements could conceivably represent an evolutionary adaptation to more effectively counter difficult-to-eradicate microbial pathogens [19].
To distinguish between the two possibilities, the ability of pUL31 mutants to bind pUL34 was analyzed by a GST (glutathione S-transferase -pull-down aS-transferase -pull-downg the tranS-transferase -pull-down.
First, public trust in health care was measured by means of three items: trust in present health care, trust in future health care and trust in existing medical possibilities (the ability of medicine to treat problems effectively).
The being of essence thus coincides with the possibility, or the ability, to receive actual existence that a purely imagined res does not have.
This is a distinct possibility given the ability of CTLA4 to both inhibit CD28 engagement as well as direct induce signaling, including induction of tryptophan catabolism [16].
This raises the possibility that the ability of Tat-SF1 to associate with the U2 snRNP, perhaps mediated by the snRNA's secondary structure, is responsible for the effects on elongation [1].
Mutation rate variability is a key theme in current discussions of the need for an extended evolutionary synthesis [14], [15] under the name of "the evolution of evolvability", the tantalizingly recursive possibility that the ability of organisms to evolve is itself a trait, or spectrum of traits, under evolutionary control [16] [19].
We therefore considered the alternative possibility that the ability of ESI to activate UPR was related to its ability to perturb protein translocation [ 12].
We also addressed the possibility that the ability of CBS to delay cellular senescence may be linked to alterations in the level of homocysteine (Hcy).
