We excluded images with patchy staining because it was difficult to outline the iERM edges.
As it was difficult to outline the cells in BAT because of the accumulation of lipid in the cytoplasm, lipid area in BAT was quantified using MetaMorph Imaging Software.
The time point for this local duplication event is difficult to pinpoint and we outline three possible scenarios in Fig. 7A.
It is difficult to understand the reasons outlined by the secretary general of NATO, Anders Fogh Rasmussen, to justify the continued engagement of his troops and the international community in Afghanistan ("Moving on in Afghanistan," Views, July 20).
For the reasons outlined above, it is difficult to distinguish between different modes of duplication retention by the analysis of sequence evolution alone.
It is difficult to believe that creationists promoting the extreme positions outlined above are completely ignorant of modern science and legal precedent.
It is difficult to confirm Shkreli's story, although its outlines conform to what is known about how the investigation started.
It is difficult to interpret the distribution of these cells without appropriate data outlining their localisation and abundance in a resting mouse.
So, given that we already have a nuanced outline of Britain's food history, it is difficult to see quite what Kate Colquhoun is hoping to do in Taste.
As a result, it is difficult to attribute change in profit-motivated vehicle theft to the five crime prevention measures outlined above.
