Water stored in the tanks is contaminated with a host of radioactive substances.
But also lurking in the liquid was a host of toxic substances released by the fire itself.
Gasoline, diesel, anti-freeze, bleach, human waste, acids, alcohols and a host of other substances must be washed out of homes, factories, refineries, hospitals and other buildings.
Folk medicine has numerous modern spinoffs, palliatives that acknowledge the beneficial health effects of food components called phytochemicals, of fiber and a host of other substances found in vegetables, fruits, cereals and herbs.
Appearing on Channel 4's Drugs Live programme looking at the effects of cannabis on the brain, Professor David Nutt said "hash" was less harmful than tobacco, alcohol, ketamine, methadone and a host of other substances.
Citrus fruits are widely used as food and or for medicinal purposes, and they contain a host of active substances that contribute to health.
Vietnam is a country blessed with many medicinal plants widely used as food and for medicinal purposes, and they contain a host of active substances that contribute to health.
They cite studies connecting a host of suspect substances to a host of human illnesses, from headaches and sniffles to immune disorders and cancer.
What does return to the surface contains dangerous chemicals as well as a host of harmful substances the fluid has pulled from the geology it has passed through, including radioactive materials.
Some, including us, were hoping that this study might play out like the final scene in a murder mystery, with the IOM conclusively pointing the finger at a whole host of suspect substances, so that we could rule them in or out.
The traditional notion of defense reflects immunology's original clinical orientation, but much of what has been called 'autoimmunity' in fact includes tolerant sentinel functions both of host tissue and tolerance of substances at the interface of host and its external environment.
