919
Collectively , these results indicate that Fbxw7 controls the proliferation and differentiation of keratinocytes , and that it exerts both inhibitory and stimulatory actions in skin carcinogenesis by counteracting the proliferation - promoting effect of c - Myc and the tumor - suppressive effect of Notch , respectively .
 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