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Small molecular anti - proliferative compounds , ORPphilins , were recently found to target two members of the ORP family , OSBP and ORP4 , revealing an essential function of ORPs in cancer cell proliferation and survival .
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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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