Energy-producing mitochondria are preserved until quite late.
Extracts were cooled, filtrated and preserved until element analysis.
While most other cities dismantled their legacy transit system, until now, Chicago preserved its own as a unique asset.
The Court seemed poised to strike down Section 5 of the Voting Rights Act (requiring preclearance) as unconstitutional in 2009, then blinked and issued a narrower ruling, which has preserved the Voting Rights Act until now.
Drawing on our research into ergonomics, medicine, movement and posture, we discovered that children in particular feel the need to move on a chair, but also that the forward-tilt position, until now the preserve of mechanical office chairs, straightens the pelvis and spine and thus improves circulation to the abdominal and back muscles".
25 It would change the nature of healthcare provision in Africa, making private providers diagnosticians, until now the preserve of clinicians.
Until now, it's been well preserved, enclosed in an anaerobic environment, oxygen-free mud, safe from all the creepy-crawlies that would normally erode it.
Other critics, including Neil Armstrong, the first man on the moon, simply doubt that the private sector can handle something that has until now been the preserve of governments.
But perhaps the biggest factor of all is that, if SpaceX is successful, it will be a demonstration of the idea that a small private firm can do something that has, until now, been the preserve of nation-states.In one sense, private space flight is nothing new.
