The dose of a drug or physical agent (such as radiation) that will not cause perceptible or immediate injury. This...

The largest dose, especially of radiation, that will not cause obvious or immediate disfunction in tissues.  

Dose that will produce a cytopathic effect in 50% of the cultures inoculated.  

The dose required to produce the desired effect.  

A low dose of a medication given to assess its safety or tolerability.  

A device for separating a tendon from the surrounding tissue.  

A diverticulum involving all the coats of muscle in the pouch wall. It is usually congenital.  

The distance at which it is safe to deliver an appropriately timed exposure of ionizing radiation for treatment or diagnosis....

Dislocation due to injury or violence.  

Any disinfectant certified by the U.S. Food and Drug Administration as having the ability to kill Mycobacterium tuberculosis as well...