extent to which a substance to which a body is exposed (by ingestion, inhalation, injection, or skin contact) reaches the systemic circulation, and the rate at which this occurs

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

Graduate Course on Speciation and Bioavailability | EVISA's Agenda of Events
Factors Affecting Methylmercury Accumulation in the Food Chain | EVISA's News
A new Selenium-containing compound, Selenoneine, found as the predominant Se-species in the blood of Bluefin Tuna | EVISA's News
Material database: Applied Isotope Technologies - ESIS™ Monomethyl mercury (isotopically labeled)
Improving the Determination of Toxic Metal Species in Drugs | EVISA's News
Directory of scientists: Herman P. van Leeuwen
New data shows: Mercury emissions rising globally | EVISA's News
National Cancer Institute ends Selenium and Vitamin E Cancer Prevention Trial, or SELECT | EVISA's News
Link database: EFSA: Scientific Opinion on Uranium in Food, in particular mineral water
Journals database: African Journal of Pure and Applied Chemistry
IAP 2012: Interfaces Against Pollution 2012 | EVISA's Agenda of Events
Chemical speciation analysis for nutrition and food science | EVISA's News
Trimethylselenonium is not the major metabolite for human cancer patients excreting high doses of selenium | EVISA's News
Directory of scientists: Nelson Belzile
Directory of scientists: Robert A. Yokel
Link database: Linus Pauling Institute: Micronutrient Information Center:Zinc
Selenomethionine shows promising results as a protective agent against Esophageal Cancer | EVISA's News
Link database: Spain: Institute of Environmental Assessment and Water Research (IDÆA) - Spanish National Research Council (CSIC)
Directory of scientists: M. Teresa Vasconcelos
Effect of dissolved humic acid on the bioavailability of lead from contaminated soil | EVISA's News