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. Author manuscript; available in PMC: 2009 Aug 1.
Published in final edited form as: Biomaterials. 2008 May 9;29(22):3245–3252. doi: 10.1016/j.biomaterials.2008.04.031

Table 1.

Experimental groups and implant characteristics.

Name Implant composition Initial activity (µCi) BMP-2/implant (µg)
Gelatin Gelatin hydrogel 6.0 ± 0.5 9.8 ± 0.8
Mps/Gelatin Mps in a gelatin hydrogel 3.7 ± 0.6* 6.0 ± 1.0*
Mps/PPF Mps in a solid PPF cylinder 5.6 ± 0.5 9.1 ± 0.8
Mps/PPF/Gelatin Mps in a PPF cylinder surrounded by a gelatin hydrogel 5.8 ± 0.4 9.5 ± 0.6

Mps = poly(lactic-co-glycolic acid) microparticles loaded with BMP-2

*

significantly lower loading relative to other implants.