These kinases provide activation signals, which play critical roles in proliferation, Ca mobilization and cell differentiation.

There are other activation signals which play a role in immune responses.

Similarly, when an activation signal for a particular model falls below a threshold, the model is deactivated.

This transmits an activation signal to the T cell after antigen is bound.

CD3-zeta may not provide a fully competent activation signal and additional co-stimulatory signaling is needed.

It received the activation signal and moved out of the shelter, heading in the direction of the river.

Traffic lights must be equipped to receive an activation signal to be controlled by any system intended for use in that area.

The remote triggering device could be sending a continuous activation signal at this moment.

The activation signal is sent, but the two Joes were with young civilians.

But if this entire complex is destroyed, the Falorians won't be able to send the activation signals to the nanoprobes.