934
The normal cell cycle is regulated by several molecules , such as the tumor - suppressor protein pRb , the G1 cyclins , the cyclin - dependent kinases , and their inhibitors .
 GENE: tumor - suppressor protein pRb; GENE: G1 cyclins; GENE: cyclin - dependent kinases
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: tumor - suppressor protein pRb; GENE: G1 cyclins; GENE: cyclin - dependent kinases