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To observe the influence of fungus polysaccharides compounds ( FPC ) in inducing human liver cancer cell Bel - 7402 apoptosis in cell cultivating in vitro , the authors analyzed tumor inhibitive gene P53 expression in Bel - 7402 apoptosis by applying double immuno - marker .
 liver cancer cell Bel - 7402, cell, tumor, Bel - 7402
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 liver cancer cell Bel - 7402, cell, tumor, Bel - 7402