Celtic, smarting from the midweek league defeat by St Johnstone, which was their first domestic loss of 2015, pushed forward but failed to penetrate the home defence until the 42nd minute when Stefan Johansen cracked a shot from 25 yards that Radoslaw Cierzniak did well to palm away.
The tracheoles insinuate themselves between cells, sometimes appearing to penetrate into them, and push deeply into the plasma membrane.
"Do you still want to penetrate me?" she asks, pushing the knife through his torso.
The Weehawken pushed ahead of it a "torpedo raft" designed to penetrate and destroy any underwater obstructions, only to find the raft severely hampered its speed and steering, threatening to disable the Weehawken.
This needle had a tendency to push the tube in front of itself rather than to penetrate.
Sensing this was a game they needed to win to reenergise their play-off push, Cardiff tried everything in the final stages but lacked the guile to penetrate a resolute Burnley rearguard.
Tian pushes Mei to the ground rather than raising her high enough to penetrate properly.
With his charges unsettling Rovers, Tottenham held sway with Vedran Corluka pushing up close behind Morten Gamst Pedersen to ensure Blackburn struggled to penetrate down the left.
Against a backdrop of rising global temperatures, the changes in atmospheric circulation can sometimes allow warmer air to penetrate unusually far to the north, while elsewhere pushing colder air unusually far to the south.
"The aim is to push the perimeter out and harden it, to make it more difficult for Shabaab to penetrate the city," Matt Bryden, the director of Sahan Research, a Somalia-focussed think tank in Nairobi, told me.
