998
We have recently shown that induced expression of a CDK target site - deficient mutant , Op18 - S25A , S38A , blocks human cell lines during G2 / M transition .
 GENE: CDK; GENE: Op18
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: CDK; GENE: Op18