Xiaoqi Liu, Purdue University (IMAGE) Purdue University Caption Xiaoqi Liu believes Polo-like kinase 1, a protein important in cell duplication, could be a good target for treating late-stage prostate cancers. Credit Purdue Agricultural Communication photo/Tom Campbell Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.