Fig. 1From: A novel chemotherapeutic sensitivity-testing system based on collagen gel droplet embedded 3D–culture methods for hepatocellular carcinomaHepG2 cell cultures in collagen gel droplets. HepG2 cells were seeded in collagen gel droplets and analyzed by a multifunctional microplate reader at 540 nm. a The represent grey scale photograph of baseline (0-time) HepG2 cells; (b) The represent grey scale photograph of HepG2 cells after 5–7 days culturingBack to article page