Fig. 10. Qualitative analysis of nanodiamond internalisation by RAW 264.7 cells. (a) Control cells cultured in the presence of serum protein; (b) cells treated with pristine nanodiamonds (PNDs) in the presence of serum protein; (c) cells treated with aminated nanodiamonds (ANDs) in the presence of serum protein; (d) control cells cultured in the absence of serum protein; (e) cells treated with pristine nanodiamonds (PNDs) in the absence of serum protein; (f) cells treated with aminated nanodiamonds (ANDs) in the absence of serum protein.