Fig. 5

(a) Morphological observation using an inverted microscope for DLA cells (b) Light microscopic image of trypan blue stained cells loaded in a hemocytometer (c) MTT assay demonstrating cell DLA viability (d) Percentage of DLA cell viability using trypan blue dye exclusion assay, after treatment with different concentrations of ZnO-NFs for 24 h. *** represents p < 0.001 compared to untreated control