Table 2.

Comparison of the HS composition, in terms of the percentage of each type of disaccharide present, in GAGs isolated from human donor BrM, porcine BrM, primary porcine RPE cell ECM and ARPE-19 cell ECM (see Table S2 for a more comprehensive analysis)

	Mole percentages of the number of sulfates or the type of sulfation									Average SO3/disaccharide
	0 SO3	1 SO3	2 SO3	3 SO3	%	Unsulfated	N-SO3	2-O-SO3	6-O-SO3
Human BrM	56.51	27.17	14.01	2.31	100	56.51	35.08	12.86	14.18	0.62
Porcine BrM	59.95	26.63	10.45	2.97	100	59.95	29.91	10.19	16.34	0.56
Porcine RPE ECM	43.19	33.7	23.1	0	100	43.19	37.98	15.84	26.1	0.8
ARPE-19 cell ECM	23.2	16.32	28	32.47	100	23.2	69.17	48.29	52.28	1.7