Prolactin-Induced Protein (PIP) Regulates Proliferation of Luminal A Type Breast Cancer Cells in an Estrogen-Independent Manner Baniwal, Sanjeev K. ; Chimge, Nyam-Osor ; Jordan, V. Craig ; Tripathy, Debu ; Frenkel, Baruch Abstract Publication: PLoS ONE Pub Date: June 2013 DOI: 10.1371/journal.pone.0062361 Bibcode: 2013PLoSO...862361B