TABLE 3.

Antibody responses to cell surface proteins of Helicobacter spp., obtained by ELISA before and after absorption with H. pylori whole-cell extract, in CLD patients, a randomized population group, and healthy blood donors

Group (n)	ELISA result (mean RAA value ± SD)a for:
	H. pullorum		H. bilis		H. hepaticus
	Before absorption	After absorption	Before absorption	After absorption	Before absorption	After absorption
Patients (29)	35.2 ± 23.4b	17.1 ± 7.7b	23.4 ± 18.3	19.7 ± 10.2	29.3 ± 24.2	29.3 ± 11.5
Population group (30)	40.5 ± 10.6c	31.8 ± 15.1c	29.8 ± 18.5	26.8 ± 10.6	22.6 ± 19.3d	38.3 ± 9.5d
Blood donors (30)	31.4 ± 10.8e	10.5 ± 6.6e	21.7 ± 10.7f	16.8 ± 12.3f	16.9 ± 12.9g	28.2 ± 12.9g

^aDifferences between mean values before and after absorption within the subpopulation of samples for each group were compared by using Wilcoxon's rank sum test for paired data.

^bP = 0.0001.

^cP = 0.0005.

^dP < 0.0001.

^eP < 0.0001.

^fP = 0.02.

^gP = 0.0001.