5216
The results of in vitro assay against human hepatocellular carcinoma cell lines ( SK - HEP - 1 and HepG2 and SMMC - 7721 cells ) , acute promyelocytic leukemia NB4 cells and uterine cervix cancer HeLa cells , show several compounds to be endowed with cytotoxicity in micromolar to submicromolar range .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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