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Colony Formation of U87 (a), JHH520 (b), GBM1 (c), and BTSC407 (d) cells after incubation with AuPVA-CB839 NPs, using both the 2D poly-d-lysine and the 3D agarose method. Dark columns in (a) are labelled as poly-d-lysine for comparison, even though no adhesion polymer was used since cell model U87 grows adherent already. A two-sample t-test was performed using Origin 8 software and significances are indicated: * p > 0.05, ** p > 0.03.
