2460
Most of the studies focusing on the mechanisms of p53 activity have been performed in cultured cells upon treatment with well - established p53 - activating inputs , such as high doses of radiations , DNA - damaging drugs and activated oncogenes .
 Anatomy: cells
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: cells 
Answer:
 Anatomy: cells