TABLE 3.

ABC values for EGFR

Quantitation of EGFR levels using PE-labeled monovalent or bivalent Abs is shown. ABC values were derived from the geometric MFI of 5000 live events.

PE-EGFR × gp120				PE-EGFR
Cell line	Mean	S.E.	n	Mean	S.E.	n
H1975	6.32 × 104	2.56 × 103	3	5.84 × 104	2.01 × 103	3
HCC827	4.01 × 105	1.27 × 104	2	3.48 × 105	1.35 × 104	4
H1650	1.21 × 105	1741a	1	9.03 × 104	8.45 × 103	3
H3255	8.23 × 105	15,039a	1	7.39 × 105	3.19 × 104	4
H820	1.11 × 105	1.41 × 103	2	9.25 × 104	5.60 × 103	2
H2935	1.34 × 105	15,428a	1	8.24 × 104	4380a	1
HCC4006	9.09 × 104	7852a	1	5.05 × 104	1850a	1
H1993	3.25 × 105	7.99 × 103	4	ND
H292	3.57 × 105	8.27 × 103	2	ND
SKMES-1	1.67 × 105	7.72 × 103	2	ND
SNU-5	1.11 × 105	6.96 × 103	3	ND

^a S.E. for n = 1 was derived from nonlinear regression analysis of antibody concentration versus MFI. ND means not determined.