Figure 5. Bright field microscopy image snapshots of cells with internalized round and elongated μTags and in the positive control group at (a) day 1 and (b) day 5 as well as (c) metabolic activity of cultures incubated with round and elongated μTags and in the positive and negative control groups at day 5, as quantified by absorbance at 490 nm (mean ± s.d.) with a MTS-based assay.
