800
The p53 + / - ; LoxPshBCCIP + / + or p53 + / - ; LoxPshBCCIP + / - mice were crossed with p53 + / - ; EIIaCre + / - mice respectively .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
 None