title: PSA lo and behold: prostate cancer stem cells.
abstract: Human prostate cancers contain multiple cell populations marked by varying levels of the differentiation marker prostate-specific antigen (PSA). In this issue of Cell Stem Cell, Qin et al. (2012) show that PSA(-/lo) cells are enriched for cells with tumor-initiating characteristics and may participate in resistance to androgen-ablative therapies.
authors.affiliation: University of Michigan Comprehensive Cancer Center, Ann Arbor, MI 48109-5942, USA. mwicha@umich.edu
authors.forename: Max S
authors.initials: MS
authors.lastname: Wicha