Fig. 3.

The olfactory function. The olfactory function was evaluated by the time spent to find a piece of cheese buried beneath the wood shavings. Five out of six transplanted mice (right) with neural stem cells (NSC) could find the food at 3 weeks while two out of six control mice could find the food at 3 weeks (left). At 3 weeks, there was no significant difference in the time spent to find the cheese between the control and transplanted mice (P=0.13). On the other hand, at 4 weeks, the cheese was found more quickly by the transplanted mice than by the control mice (P=0.04). NSC (-) denotes without transplantation of NSC while NSC (+) with transplantation.