At present the cause of the SAA research focus mainly concentrated in the abnormal t cell subsets, a negative regulator of level changes and apoptosis, are reviewed on research in these areas.

It precludes a level of trust and open communication between regulated and regulator.

The primary function of a regulator is to reduce high-pressure gas in a cylinder or process line to a lower, usable level as it passes from the cylinder to a piece of equipment.