This hypothesis was not proven until the work by the two groups.
Its role in DNA repair was not formally proven until the emergence of studies implicating Ku as the defective factor in cells hypersensitive to DNA-damaging agents [ 30].
In this setting, none of the theorems proved until now can be applied to guarantee that a nonlinear operator (even if it is a contractive mapping) has, at least, a fixed point.
As Hayatou dozed through it all, he rather proved that until the personnel and the culture change, all the Powerpoint presentations and governance buzzwords in the world will not heal Fifa's rotten heart.
The models proved accurate until the beginning of the current century, according to the study.
None proved practicable until the disintegration of the Soviet Union at the end of 1991 left the Russian Federation with, initially, relatively weak frontier controls between it and the newly inde- pendent Baltic republics.
Sulfadoxine-pyrimethamine, commonly sold as Fansidar, came next and proved effective until the end of the last century, when resistance proved common.
That year, the Warner brothers established the Pittsburgh-based Duquesne Amusement Company, a distribution firm that proved lucrative until the advent of Thomas Edison's Motion Picture Patents Company (also known as the Edison Trust), which charged distributors exorbitant fees.
Although it has been known for more than three decades that osteoclasts are hyperstimulated by cytokines in myeloma, the osteoclast-activating factors (OAFs) responsible proved elusive until the late 1990s.
Kissana Phathanacharoen, of the Centre for Administration of Peace and Order, which was dissolved under martial law, said: "There will always be rumours of a coup d'etat but no one can actually prove them until the army performs the coup d'etat.
Such a border might make sense at some point, but real Israeli security will prove elusive until the occupation of the West Bank ends and Palestinians are permitted to rebuild their institutions and establish their state.
