Figure 5. Combination of 90K and apoptotic U251 cells improved the performance of DC vaccine. (A) Mature DC under electric microscope. (B) Apoptosis U251-90K-DC group had more cells contact and fusion than other groups (red arrowhead). (C) The expression of CD11c on immature DC, Mature DC, 90K-DC, Apoptosis U251-DC and Apoptosis U251-90K-DC groups.