Health Boards


My Profile

Health Boad

Health Jobs


Health Tools


This is the commonly used abbreviation for the dose of a toxicant causing a defined effect on n% of a test population; for instance, the ED50 would affect 50% of the population.

Selected EDn links:

© 1997-2006 is a purely informational website, and should not be used as a substitute for professional legal, medical or technical advice.