1531
The level of necrosis , as measured by propidium iodide internalization , increased significantly after 24 hours exposure to Sim at 50 microM ( p < 0 . 01 ) .
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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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