The immune system appears to play a key role in both.

Still, the official said, the system appears to be working well.

A system of rulers with high social status also appeared.

"The system appears to be operating much more efficiently than before."

From the looks of things, the system now appeared to be operating perfectly.

The system appears to be similar to that used in Denmark.

The system is ready for production and will appear on some vehicles by the end of 2002.

Those systems appear to be in chaos, where they exist at all.

Unfortunately, such a fair system appears to be a long way off.

He added, though, that no such system appeared to exist on the first floor.