TABLE 6.

Stx binding to platelets versus platelet Gb₃ expression in individual platelet donors by flow cytometry and HPTLC^a

Sample	% Gb3b,c	Gb3/CDHb,d	% Stx-B positivee
1	14.8	0.42	71.6
2	24.5	0.46	38.9
3	40.5	1.53	49.3
4	21.5	0.35	28.8
5	31.6	0.74	46.5
6f	ND	ND	30.4
7	38.4	0.93	25.7
8f	ND	ND	33.6
9f	ND	ND	49.4
10	12.3	0.07	0.03
11f	ND	ND	22.0
12	21.1	0.35	7.0
13f	ND	ND	19.9
14	45.6	0.99	12.4
15	34.0	0.72	10.6
16	25.7	0.28	19.6
17	27.8	0.41	18.6
18	11.0	0.16	16.9

^aPercent Gb₃ versus Stx-B positivity: r = +0.03 by Pearson product-moment correlation (17). 

^bScanning densitometry of DPA-stained HPTLC plates. ND, not done. 

^cPercent Gb₃ as percent total platelet neutral GSL. 

^dRatio of the area (in square millimeters) of Gb₃ and CDH, as determined by scanning densitometry. 

^ePercent platelets positive with FITC-labeled Stx-B subunits and PE-labeled MAb P2 (anti-CD41). 

^fInadequate sample for analysis.