Table 1.

Summary of the experimental groups and experiments

Batch	Experiment	Time between injections and training	BrdU dose (mg/kg)	Group size	Time of killing after training
1	Neo-neurons arborization	2 months	50	Control, 6	1 d
				Learning, 8
2	Neo-neurons arborization	4 months	50	Control, 4	1 d
				Learning, 6
3	Neurons arborization	4 months		Control, 5	1 d
				Learning, 5
4	Effect of AraC infusion on cell proliferation measured 1 d after the end of the treatment		3 × 50	aCSF, 10
				AraC (0.2), 8
				AraC (0.6), 5
				AraC (1), 8
5	Effect of AraC infusion on cell proliferation measured 2 weeks after the end of the treatment		3 × 50	aCSF, 6 AraC, 6
6	Blockade of cell proliferation by AraC infusion 2 months before training	2 months	3 × 100	aCSF, 13 AraC, 13	90 min
7	Blockade of cell proliferation by AraC infusion 4 months before training	4 months	3 × 100	aCSF, 9 AraC, 10	90 min
8	Blockade of cell proliferation by AraC infusion 1 week before training	1 week	3 × 100	aCSF, 10 AraC, 14	90 min