From the point of view of linear algebra, vector spaces are completely understood insofar as any vector space is characterized, up to isomorphism, by its dimension.
Secondly, although the causes and physiology of insomnia have not been completely understood, it is generally considered as one kind of hyperarousal disorder related to increased activity of hypothalamic-pituitary-adrenal-axis [ 13].
I will focus on the cases when all fibres are non-singular, as these are completely understood (due to Hong, Brönnle and also my PhD thesis).
MAPK15 functions are far from being completely understood.
The pathophysiology of vasospasm is far from being completely understood.
The etiology of postmortem fetal extrusion is not completely understood, as the event is neither predictable nor replicable under experimental conditions.
Although it is not completely understood as how TAK1 activity is biochemically regulated, its activation seems to require TAK1-binding proteins such as TAB1, TAB2, and TAB3.
Moreover, MeHg toxicity and the period of time before effects appear are not completely understood, as few studies have been conducted beyond the first months or years of life in either animals or humans.
The underlying mechanisms are not completely understood, as blood urea does not fully account for the increase in osmolality.
