Strange, half-glimpsed green fluid circulated below the surface of her transparent face.

The fluid-filled pipes can reach temperatures of 150 to 220 degrees Celsius when the fluid is not circulating.

Usually this is because the fluid is not circulating properly.

The systems vary depending on local conditions, with some consisting of a shallow subterranean loop of piping in which fluid circulates to collect or dump heat.

I believe these fluids do not circulate like blood.

When this fluid circulates, living beings are healthy.

Inside, a viscous green fluid circulated.

The main body cavity is a hemocoel through which blood and coelomic fluid circulate and which encloses most of the other internal organs.

A refrigerant fluid evaporates and is circulating continually in a vessel jacket.

The cerebrospinal fluid circulates around the brain and spinal cord.