The molecular mechanism that results in an aggregation of Aß with increasing age in the brain is still uncertain, but abnormal interactions with biometals (principally copper and zinc) may play a prominent role [15].
The evolutionary origin of such enigmatic behaviour, however, remains elusive because of the uncertain phylogenetic position of freshwater eels within the principally marine anguilliforms.
French total losses are uncertain but the garrison suffered at least 900 casualties, principally in the fighting in the central highlands on 1 and 2 February and during the siege of Fort Desaix.
Exactly how that will work with the big staff cuts that are expected at all four papers is unclear.The effects of moving to a principally digital operation in two states with some of the lowest internet-usage rates in the country are also uncertain.
Story principally about Richard Dix.
Principally, Ms. Young lacks technique.
We need to get on with the necessary fixes — principally the transition to energy sources other than fossil fuels — to avoid the really, really bad scenarios lurking out there in the uncertain borderlands of our predictions.
Principally it's pure dance.
It feeds principally on fish.
