Sentence examples for been unclear until now from inspiring English sources

Plans for teaching Cunningham's technique had been unclear until now.

He is also expected to propose that the rules explicitly apply to any Internet service, even if delivered over wireless networks — something that has been unclear until now.

Historians had been aware of the existence and the location of the cemetery since the 1950s, but the scale of the burial ground was unclear until now.

While the existence and location of the cemetery has been known to historians since at least the mid-20th century, the sheer scale and extent of the burial ground was unclear until now.

In general, an origin of the Si 001 -c 8 Si 001 -c 8ure is unclear until now.

Though similar SiO2 C materials have been reported previously to demonstrate broadband visible PL [2 5], origin of light emission centers is unclear until now.

Although there had been previous sightings in Florida Bay, it was unclear until now whether they were simply passing through or if this was where they lived.

One puzzling observation that was unclear until now is whether or not Zn and Mn bind to the same site in TpTroA.

However, the molecular mechanisms by which Wnt/β-catenin pathway regulate apoptosis are unclear until now.

Despite of these findings, the molecular mechanisms by which Wnt/β-catenin pathway regulates apoptosis are unclear until now.

Previous findings by our laboratory had implicated HER2 and BCRP in resistance to the growth inhibitory effects of letrozole and to maintenance of stem cell characteristics in letrozole-resistant breast cancer, and had demonstrated that its expression was dependent on HER2 [ 35, 52], but it was unclear until now how HER2 regulated BCRP.