Table 3. Experimental groups for microarray analysis.

Lumbar DRGs (L4, 5, 6 for Experiments I, II, III; L4, 5 for Experiment IV) were dissected for RNA isolation.

Experiment number	Group number	Treatment	Number of animals	Arrays for data analysis after quality control
I	1	Naïve	n=12	n=4
	2	Conditioning lesion day 1	n=9	n=3
	3	Conditioning lesion day 3	n=9	n=3
	4	Conditioning lesion day 7	n=9	n=2
	5	Conditioning lesion day 14	n=9	n=3
II	6	Mesopram infusion day 1	n=9	n=3
	7	Mesopram infusion day 3	n=9	n=3
	8	Mesopram infusion day 7	n=9	n=3
	9	Mesopram infusion day 14	n=9	n=3
	10	Control infusion day 7	n=9	n=3
	1b	Naive	n=9	n=3
	4b	Conditioning lesion day 7	n=9	n=3
III	11	Control (DMSO) infusion day	n=9	n=3
	12	Naïve	n=9	n=3
	13	Anesthesia only day 1	n=9	n=3
IV	14	*PBS injection day 1	n=9	n=3
	15	*PBS injection day 3	n=9	n=3
	16	*PBS injection day 7	n=9	n=3
	17	*PBS injection day 14	n=9	n=3
	18	db-cAMP injection day 1	n=9	n=3
	19	db-cAMP injection day 3	n=9	n=3
	20	db-cAMP injection day 7	n=9	n=3
	21	db-cAMP injection day 14	n=9	n=3