Figure 8

Tumorigenicity of UCB-MSCs in athymic nude mice. MSCs from all groups (10% FBS (A) or 2 (B), 5 (C), 7 (D), or 10% aPRP (E)) could not cause tumors in the athymic nude mice while breast cancer cells easily caused tumors when injected in the same mice. MSCs were injected in the left breast; and breast cancer cells were injected in the left breast.