The honest answer is we do not know because we are dealing with a biological system.

BBC: TV botanist's alarm at spill

Topping up the supply of healing fluid might be done by mimicking another biological system the network of blood capillaries that supplies living tissues with the stuff they need to thrive.

ECONOMIST: Monitor

The illness is identified as the consequence of multiple "biological alterations" affecting the brain and nervous system. iReport.com: Do you know someone affected by Gulf War illness?

CNN: Gulf War illness is real, new federal report says

While the detection of viruses is distributed over the Internet, for example, just as the cells of the immune system are spread throughout the body, there is no biological equivalent of the central analysis centre.

ECONOMIST: A thousand ills require a thousand cures