Sometimes, this is because the host's immune system simply does not respond adequately or at all.

The response must be zero for since a system cannot respond to a force before it is applied.

But now it's really broken, "because the system can't even respond to a crisis!"

Critics say numbers like these show the system no longer responds to rising need.

The system hadn't responded when she touched the press pad.

It's very strong and its nervous system may not respond the same way as a human's.

Egypt's judicial system does not respond to pressures of any kind.

Most systems will respond to increased load with some degree of decreasing performance.

"After that, the system will no longer respond to the keypad."

"The environmental systems did not respond to the smoke or the fire," Tuvok said.