Poisonous substance produced by a biological organism such as a microbe, animal or plant.

The term "toxin" was found in the following pages:

First biological function of mercury discovered | EVISA's News
Bacterial methylation of mercury not only starting from oxidized mercury | EVISA's News
Arctic Mercury Cycling May Be Linked to Ice Cover | EVISA's News
More nutritious food helps reduce methylmercury in the aquatic food chain | EVISA's News
The European Commission has put on hold plans to increase maximum authorised mercury level in fish | EVISA's News
Mercury levels in Pacific yellowfin tuna increasing | EVISA's News
Journals database: Environmental Toxicology and Water Quality
Link database: Dartmouth Toxic Metal Research: Arsenic - A Murderous History
New Report Shows High Levels of Mercury in Terrestrial Ecosystems | EVISA's News
New California study concludes that thimerosal seems not to be the major cause for autism | EVISA's News
Study shows link between clear lakes and methylmercury contamination in fish | EVISA's News
Researchers Find Alga that Influence Arsenic Cycling in Hot Springs | EVISA's News
Trace element speciation for environmental analysis | EVISA's News
Link database: NRDC: Arsenic and Old Laws
Most Canadians having dental amalgam in their mouth are exposed to mercury at levels surpassing the reference exposure level (REL) | EVISA's News
ORNL scientists solve mystery about mercury methylation | EVISA's News
Journals database: Journal of Food Safety
TBT from antifouling paint is still endangering marine life, says WWF | EVISA's News
Scientists discover new broad-spectrum antibiotic based on arsenic | EVISA's News
Link database: NoMercury: Working to make our Nation mercury-free