Research Article

Hydroxyapatite-Based Colloidal Gels Facilitate the Proliferation and Migration of Chondrocytes and the Adhesion of Umbilical Cord Mesenchymal Stem Cells

Figure 2

Raman spectrum obtained from porcine chondrocytes cultured on HA/PLGA gels. Red spectrum is from HA/PLGA only; green spectrum comes from HA/PLGA gel plus media; and blue spectrum is derived from HA/PLGA/chitosan gels that had cells cultured on them.