20680
The biopsy tissues of human bladder cancer , bladder polypoid cystitis , and chronic inflammation were collected ; the levels of A20 and p53 were analyzed by quantitative real - time RT - PCR , Western blotting , and immune precipitation .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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