LD50short forlethal dose - Lethal Dose
The medianMedianTo glossary lethal dose (LD50short forlethal dose) is the statistically calculated single dose of a substance, or a corresponding dose of microorganisms, that is expected to cause death in 50 % of the exposed organisms within a specific period of investigation. The value is usually expressed as a ratio of the mass of the test substance relative to the mass of the experimental animal in mgshort formilligram/kgshort forkilogram body weight or as a microbial count.