Fig. 5
From: High-throughput scaffold-free microtissues through 3D printing
Images of h-PMSC (a-d) stained with Calein AM at different cell densities at 72 h, scale bars = 200 μm. Images of Hoechst 33342 fluorescence staining of h-PMSC (e) at 72 h at different focal planes, scale bar = 200 μm. Image of h-PMSC (f) monolayer on a flat polystyrene plate stained with Calein AM, scale bar = 1000 μm