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The FK506 plus SRL combination showed only a marginally higher degree of fibrosis as compared with controls ( P = 0 . 05 ) .
 FK506, SRL, fibrosis
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 FK506, SRL, fibrosis