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Bone marrow - derived mesenchymal stem cells ( BM - MSC ) have been demonstrated to be an attractive therapeutic cell source for tissue regeneration and repair .
 Bone marrow - derived mesenchymal stem cells, BM - MSC, cell, tissue
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 Bone marrow - derived mesenchymal stem cells, BM - MSC, cell, tissue