Teixeira, Felipe C. O. B.; Kumar, Archana Vijaya; Katakam, Sampath Kumar; Cocola, Cinzia; Pelucchi, Paride; Graf, Monika; Kiesel, Ludwig; Reinbold, Rolland; Pavão, Mauro S. G.; Greve, Burkhard; Götte, Martin: The Heparan Sulfate Sulfotransferases HS2ST1 and HS3ST2 Are Novel Regulators of Breast Cancer Stem-Cell Properties