In contrast to these approaches, post-mortem brain tissue is difficult to obtain, and some RNA quality concerns exist that might potentially influence transcriptome studies [7], [8].
Concern exists that oncologic surgical complexity is not adequately captured by the primary procedure code alone.
Although significant concern exists that armoring by iron and aluminum oxide precipitates may limit the reactivity and longevity of the permeable reactive barrier, maintenance of saturated conditions and installation of effective subdrainage and/or flushing procedures can be effective in overcoming problems and yield an effective, low maintenance solution to an increasingly troublesome problem.
Absent legal reforms, the concern exists that positive steps may have more to do with improving Iran's public image as the country negotiates on its nuclear program.
The prognosis may differ between concussed adults and children; little research has been done on concussion in the pediatric population, but concern exists that severe concussions could interfere with brain development in children.
Concern exists that the closed stud book and tightly regulated population of the Thoroughbred is at risk of loss of genetic diversity because of the level of inadvertent inbreeding inevitable in such a small population.
A concern exists that the extent of clinical development may not objectively reflect the extent of mechanistic participation of a gene but may be distorted by other factors, such as market niche, the historical duration of study, dominant opinions in the field etc.
However, concern exists that tumour cells might be transported from the primary tumour into the lymphatics.
Although the vCJD epidemic is declining, considerable concern exists that clinical characterastics of vCJD will shift.
Firstly, a theoretical concern exists that anyone with access to the internet can alter Wikipedia.
