Table 3. Scoring of transgene expression at the different implant locations.

	Rat 1			Rat 2			Rat 3			Rat 4			Sum of scores
	i.m.	s.c.	ort.	i.m.	s.c.	ort.	i.m.	s.c.	ort.	i.m.	s.c.	ort.	i.m.	s.c.	ort.
pGFP 100 μg/ml	2	0	1	2	0	3	2	1	3	0	1	1	6	2	8
pGFP 10 μg/ml	0	0		1	0		0	0		0	0		1	0
pGFP 1 μg/ml	0	0		0	0		0	0		0	0		0	0
pGFP + fibroblasts	2	2		1	1		0	1		2	0		5	4
pGFP + MSCs	1	1		3	0		3	1		2	3		9	5
Control	0	0		0	0		0	0		0	0		0	0

Each implant was given a score (0, 1, 2 or 3) for the amount of GFP expression (as detailed in the M&M section). The sum of the total scores per group is depicted. i.m.: intramuscular; s.c.: subcutaneous; ort.: orthotopic.