Figure 2

3D organotypic culture of human lung fibroblasts (HLFs). (A) Schematic diagram of cell gelation in a microfluidic chip. (B) Confocal microscope image of HLFs just after gelation in a microfluidic chip (magnification = ×10). (C) Confocal microscope image of 3D-HLF after three days of culture (magnification = ×10).