Optimization of the time-dose relationship.
D000818:Animals; D002470:Cell Survival / Q000528:radiation effects; D006801:Humans; D051379:Mice; D009369:Neoplasms / Q000532:radiotherapy*; D009374:Neoplasms, Experimental / Q000532:radiotherapy; D011879:Radiotherapy Dosage; D051381:Rats; D013997:Time Factors