Researchers compared the responses of different sympathetic nervous systems during acute stress in animal models.

Marine biologists studied how starfish coordinate movement using their water vascular systems during prey handling.

Astronomers discovered several triple star systems in the dense region of the star cluster.

Many former colonies adopted Westminster parliamentary systems after gaining independence, shaping their political institutions for decades.

Researchers studied how different vegetative nervous systems respond to chronic stress in mammals.

Autonomic nervous systems regulate heart rate and digestion without conscious effort.

In several countries, two-party systems have long shaped government policy and limited the choices available to voters.

Airport engineers inspected the instrument landing systems before the storm.

Many airlines rely on global distribution systems to manage inventory and ticketing across multiple markets.

Researchers compared the stability of various three-party systems across different regions.