Glioblastoma cells are amongst the most common and most aggressive in brain cancer. The above cells were cultured for 48 hours under magnetic levitation. Brightfield (left) and GFP green fluorescence (right) photomicrographs of GFP expressing glioblastoma cells. Our studies with other cell types indicate that MLM culturing represents an improved in vitro cell culturing platform that produces cells that much more faithfully recapitulate in vivo tissue properties than 2D culturing (Souza et al. Nature Nanotechnol. 2010).