Table 1.

^99mTc accumulation values obtained at day 4 when no magnet was implanted

	mBSA + PBS	DXM suspension	Polymer microparticles	SPION suspension	Microparticles + SPIONs	Complete microparticles
	(-)	(-)	(-)	(-)	(-)	(-)
	2.01	0.96	1.68	1.48	1.89	1.09
	2.32	1.33	1.76	1.54	1.23	1.31
	2.21	1.36	1.33	1.33	2.08	1.09
	2.31	1.38	1.55	1.65	2.09	1.08
	2.1	1.31	1.47	1.23	1.85	1.21
Mean	2.19	1.27	1.56	1.45	1.83	1.16
SD	0.13	0.17	0.17	0.17	0.35	0.10

The values are expressed as the ratio of the gamma-counting values in the treated joint (left knee) to those of the untreated joint (right knee). (-) indicates groups without a magnet. DXM, dexamethasone 21-acetate; mBSA, methyl bovine serum albumin; PBS, phosphate-buffered saline; SD, standard deviation; SPION, superparamagnetic iron oxide nanoparticle.