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We conclude that Oxygent increases TET epithelial PtO ( 2 ) , improves epithelial metabolism , does not impair angiogenesis , and tends to slow cartilage tissue formation .
 TET epithelial, epithelial, cartilage tissue
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 TET epithelial, epithelial, cartilage tissue