Supplement-Table 4: Optical density values of standards with known concentrations of syndecan-1.

Optical Density 450 nm	Concentration of Syndecan-1, pg/ml
2.06	8000
1.05	4000
0.58	2000
0.35	1000
0.23	500
0.20	250
0.16	125
0.13	0