Neuroblastoma patient-derived xenograft cells cultured in stem-cell promoting medium retain tumorigenic and metastatic capacities but differentiate in serum. - Persson CU; von Stedingk K; Bexell D; Merselius M; Braekeveldt N; Gisselsson D; Arsenian-Henriksson M; Påhlman S; Wigerup C (Scientific reports, 2017)