p53 down-regulates CHK1 through p21 and the retinoblastoma protein
Molecular and Cellular Biology (2001) - Comments
pubmed: 11158294  doi: 10.1128/mcb.21.4.1066-1076.2001  issn: 0270-7306  issn: 1098-5549 

Vanesa Gottifredi, Orit Karni-Schmidt, Sheau-Yann Shieh, Carol Prives