Gen. David Rodriguez, deputy director for operations on the military's joint staff, said it was "not that relatively difficult" to employ anthrax as a weapon, and he cited C.I.A. assessments that Al Qaeda has pursued biological weapons.
The space made no sense at all – long and narrow, not to mention relatively difficult to spot from the street – but they took it on anyway.
Although peripheral blood mononuclear cells (PBMCs) are major targets and reservoirs of HIV, PBMCs culturing is relatively difficult and not always reproducible.
YouTube's system also automatically placed ads against content using algorithmic methods, meaning preventing this kind of thing on a case-by-case basis is a relatively difficult, if not impossible, task.
As the fourth criterion is formulated in terms of an equivalence setting, which is relatively difficult to meet, not rejecting this criterion is not necessarily definite evidence that the criterion holds [ 21].
It was already known that Sars was relatively difficult to catch – not like flu at all.
In fact, the difference in mass between objects was very small and therefore relatively difficult - if not impossible - to be perceived haptically (cf., Weber, 1834/1978).
However, the molecular epidemiology of each HRV species is not yet known, because HRV is relatively difficult to isolate and detect.
The flow cytometry techniques currently used to measure CD34+ cells are relatively difficult to perform and are not very cheap.
We found that high contrast striped targets were relatively difficult, as in previous experiments, but that this benefit was not unique; several other target types, including uniform grey targets and a white edged grey target were similarly difficult to capture.
