Cytotoxic effects and comparative analysis of Ni ion uptake by osteoarthritic and physiological osteoblasts oleh Polina Navratilova, Marketa Vejvodova, Tomas Vaculovic, Iva Slaninova, Jan Emmer, Tomas Tomas, Ludek Ryba, Jan Burda, Monika Pavkova Goldbergova