5338
We have studied the induction of the " TGF - beta - resistant " phenotype in a clonal strain of early passage WB - F344 normal cultured rat liver epithelial cells , the proliferation of which was markedly inhibited by TGF - beta .
 clonal strain, WB - F344, liver epithelial cells
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
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Answer:
 clonal strain, WB - F344, liver epithelial cells