In India, old caste rigidities are being broken down (see article).
"The mobile gaming barriers are being broken down," claims Gerald Wiener, Nokia's general manager for games.
The fission yeast Schizosaccharomyces pombe undergoes closed mitosis in which the nuclear envelope persists rather than being broken down, as in higher eukaryotic cells [1].
"The blood-brain barrier is there to protect the environment of the brain, so imagine it's gradually being broken down," Bynoe says.
Under America's "Megatons to Megawatts" programme, weapons-grade material from retired warheads is being broken down to provide fuel for civilian nuclear power stations.
As part of that withdrawal, the communications systems for soldiers are being broken down, including operations for mail, telephones, Internet and television.
Tissues throughout the body require ongoing repair and replacement, and thus the body's protein is turning over constantly, being broken down and then resynthesized as needed.
Early on, the company posited that they were being broken down by microorganisms, though it has pretty much given up on this idea by now.
Offshore, at least, it is rapidly being broken down by oil-eating microbes.
In addition, integrity of MMC SPC complex also prevents the labile amino group of MMC from being broken down at low pH surrounding.
But in the latest study, he found that osteocalcin only works when bone is being broken down during its natural turnover.
