Although murine experiments are crucial to advance our knowledge of mechanisms which underlie virus-bacteria interactions, examining all different factors in detail is extremely difficult work.
"It's disheartening to think that years of extremely difficult work at New Castle County maintaining our AAA bond rating could be tossed aside by weeks of reckless stubbornness by Tea Party Republicans.
It can be extremely difficult working for a narcissist, and dealing with all of the possible negative emotional effects for you.
The exploitation of these sites has been undertaken despite the extremely difficult working conditions encountered in the desert.
The extraordinarily thick cover, the extremely difficult working conditions, and the tremendous expense of mounting expeditions into remote areas have long held geologic knowledge of Antarctica far behind that of other continents.
i) To improve professional networking among paediatric wards Despite the extremely difficult working conditions of staff involved (salaries small and often delayed, lack of basic medicines and supplies, and even heating in winter).
"It is an extremely difficult environment to work in.
It's a huge portfolio to monitor and an extremely difficult place to work".
There is no doubt that Liberia is an extremely difficult place to work, and there are certainly elements of the international system that are creating positive change.
Mochizuki's proof, Tao says, is built on decades of work in an extremely difficult area of mathematics known as anabelian geometry, which very few people in the world are actively working on.
