17682
In vivo cytotoxic assays take into account the interaction of target and effector cells in the context of the proper microenvironment making the analysis biologically more relevant than in vitro cytotoxic assays .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None