This repair of normal tissue means that there is a therapeutic ratio between cancer cells and normal cells.

These results, as well as the high therapeutic ratios observed, indicate that these compounds represent attractive candidates as antiviral agents to control poxvirus infection.

Moreover, the toxic:therapeutic ratio of deferiprone is reportedly low; doses of 100 mg/kg/day have resulted in bone marrow toxicity in animals and humans.

Forman JD, Zinreich E, Lee DJ, et al.: Improving the therapeutic ratio of external beam irradiation for carcinoma of the prostate.

Forman JD, Order SE, Zinreich ES, et al.: Carcinoma of the prostate in the elderly: the therapeutic ratio of definitive radiotherapy.

Both opioids and amphetamines induce a therapeutic response very quickly, showing results within twenty-four to forty-eight hours; the therapeutic ratios for both opioids and amphetamines are greater than those of the tricyclic antidepressants.

In practical terms, marijuana cannot induce a lethal response as a result of drug-related toxicity....Marijuana's therapeutic ratio is impossible to quantify because it is so high....Marijuana, in its natural form, is one of the safest therapeutically active substances known to man.

Although proton therapy could theoretically improve the therapeutic ratio of prostate radiation, allowing for an increase in dose to the tumor without a substantial increase in side effects, no randomized controlled trials have been conducted to compare its efficacy and toxicity with those of other forms of radiation therapy.