Table 2.

Quantitative FACS analysis of MRP3 expression by biopsies, cell lines, and established xenografts with MAb 16A11

Diagnosis	Positive cases/Total cases	Percent	Estimated number of MRP3 molecules per cell
Cell Lines
GBM adult	6/7	86	0.1-4.9 × 105 (med. = 1.9 × 105)
MED pediatric	5/5	100	0.7--2 × 105 (med. = 1 × 105)
Biopsies
AA adult	3/6	50	1.7--2.7 × 104
GBM adult	22/27	82	0.17--6.5 × 105 (med. = 6.5 × 104)
Xenografts
GBM adult	4/7	57	0.2--2.1 × 105
MED pediatric	2/3	67	1.6--2.5 × 104