796
The heterozygous p53 knockout mice [ 36 ] were crossed with LoxPshBCCIP + / + - 4 mouse and EIIaCre + / + mouse respectively to generate p53 + / - ; LoxPshBCCIP + / - , and p53 + / - ; EIIaCre + / - mice .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
Answer:
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