7791
Laboratory and clinical evidence suggest that NAG - 1 , like other TGF - beta family members , may have different or pleiotropic functions in the early and late stages of carcinogenesis .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None