. Author manuscript; available in PMC: 2010 Jan 1.

Published in final edited form as: J Orthop Res. 2009 Jan;27(1):42–49. doi: 10.1002/jor.20715

Table 1.

Properties of RIA Filtrate

General Properties
	Mean ± SD	Range
Volume (mL)	230 ± 200	50–570
Nucleated cells (per mL)	6.2 ± 5.2 × 10⁶	1.84–13.3 × 10⁶
Total protein (mg/mL)^a	12.9 ± 8.2	4.9–21.3
Progenitor Cells^a
	Mean ± SD	Range
No. of Cells after 2 Weeks	1.5 ± 0.7 × 10⁷	0.46–2.1 × 10⁷
Regenerative Factors (ELISA)^a
	pg/mL (Mean ± SD)	ng/mg Total Protein (Mean ± SD)
BMP-2	ND	ND
FGF-2	430 ± 160	0.042 ± 0.024
IGF-I	4900 ± 3700	0.36 ± 0.14
TGF-β1^b	9800 ± 5900	0.79 ± 0.12

ND, not detected.

Information only available from four of five patients.

TGF-β1 almost entirely latent.