953
The steady - state levels of Cdk2 , Cdk4 and Cyclin A proteins were unaffected by HPR , while those of Cyclin D1 were significantly reduced in all three cell lines .
 GENE: Cdk2; GENE: Cdk4; GENE: Cyclin A proteins; GENE: Cyclin D1
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: Cdk2; GENE: Cdk4; GENE: Cyclin A proteins; GENE: Cyclin D1