There is therefore a critical need to define more precisely the pathways of EVD acquisition by HCWs, to optimise measures for reducing risks during the current and future outbreaks.
For example, increasing evidence has demonstrated that iron has a role in the tumor microenvironment and pathways of iron acquisition, efflux, and regulation are all perturbed in cancer [ 12].
Whereas students are more open to adapt modern technologies and environments into their learning activities [ 11, 48], our study suggests that GPs are more likely to continue their common pathways of knowledge acquisition.
These lines were isolated from the same spontaneous arising BALB/c mammary tumor [ 5, 6] but appear to have followed divergent pathways for acquisition of their metastatic phenotypes [ 12].
Interestingly, there were correlations between ER and activity of the two kinases in the clinical relapse material, supportive of ER kinase crosstalk and hence targeting of the contributory pathways following acquisition of tamoxifen resistance.
However, deciphering growth factor receptor kinase pathways at the time of acquisition of tamoxifen resistance has proved notoriously problematic in clinical material because of the difficulty in obtaining paired samples before tamoxifen administration and subsequently on relapse.
Given the apparent nature of pathway acquisition through a series of horizontal transfer events, these missing genes are likely to reflect early stages in the acquisition of the pathway, with some species yet to acquire some genes.
Previous proteomic study found that a common stress response of Synechocystis under various environmental perturbations, irrespective of amplitude and duration, is the activation of atypical pathways for the acquisition of carbon and nitrogen from urea and arginine, as evidenced by the significant up-regulation of urease that converts urea into CO2 and ammonia, under most conditions [ 50].
Given the relationship of the Hemiptera suborders, this raises the possibility that both the loss of the IMD pathway and acquisition of an α-proteobacterial lysozyme occurred independently in the Sternorrhyncha and Heteroptera lineages.
Given its presumed importance, and the fact that comprehensive reviews have appeared recently on the role of the conditioning and vicarious learning pathways in the acquisition of childhood fears and phobias (Askew and Field 2008; Field 2006a), the current article focuses solely on the causal status of verbal threat information as a pathway to fear.
