Sentence examples for extremely difficult to study from inspiring English sources
The human brain is extremely difficult to study, especially when a person is still alive.
These regions, which encompass about 15percentt of the genome, have been extremely difficult to study using traditional methods.
"If a species is spread out across a vast area, it's extremely difficult to study that species across its entire natural range," he said.
Underground mine drainages are extremely difficult to study due to the lack of information about the flow path and source proximity in relation to the outflow adit.
"It's extremely difficult to study the internal structures of the eye," said Dr. Adrian Glasser, an expert in the physiology of the eye at the University of Houston College of Optometry in Texas.
Asian elephants are also extremely difficult to study in the wild, she adds.
However, these extremely ill patients are difficult to study repetitively in the acute setting, and these data would have likely increased the differences between acute NPSLE as compared to SLE patients or healthy controls.
Therefore, it is extremely difficult to precisely study the natural history of changes observed in the early stages of the disease over a shorter time frame.
This aspect is even more relevant for rare cancers, as GIST, for which it is extremely difficult to make studies with prognostic and predictive purpose, for the need of an adequate number of patients to analyze and follow for a long time.
