This is not an unimportant question, because the "RAG transposon model" is currently the only published model of the origins of the acquired immune system, and yet the RAG transposon has not been located despite an intensive search as reviewed in this manuscript.
Ciliobrevin is currently the only published small molecule, membrane permeable inhibitor of dynein that can be added to live cells.
The genome of the demosponge Amphimedon queenslandica was published in 2010 [ 1] and is currently the only published genome from phylum Porifera.
SF-6D index scores were calculated using a utility function derived from the United Kingdom general population [ 29], which is currently the only published SF-6D scoring algorithm.
Although nebivolol was likely under-dosed in these two studies, they are currently the only published prospective comparator trials and helped to pave the way for two larger-scale, placebo-controlled trials.
Currently, the only published cellular-level TK model for the uptake, biotransformation and efflux of arsenicals is the Easterling et al. [ 34] model schematically shown in Figure 1; they demonstrated the relative importance of transport processes affecting the accumulation of arsenicals in rat hepatocytes [ 34].
Currently, NamUS only publishes missing persons reports sponsored by law enforcement agencies.
There is currently only one published scoring system for tomosynthesis, developed by Vult von Steyern et al. [5] (Table 4).
As for tomosynthesis, there is currently only one published scoring system for MRI, developed by Eichinger et al. [9] (Table 6).
The literature is actually limited in comparing these two major approaches: to the best of our knowledge, there are currently only five published papers comparing HAPs depletion and LAPs enrichment [8], [23] [26], and none of them included the ProteoPrep20 which immunocaptures the highest number of HAPs and therefore should be considered the more efficient currently available depletion system.
