. 2002 Nov;9(6):1313–1317. doi: 10.1128/CDLI.9.6.1313-1317.2002

TABLE 2.

H. pylori serological status of 189 persons from Ladakh in relation to antigens used for serological testing

Serological status		U.S. H. pylori antigen^b		Ladakh H. pylori antigen^b
H. pylori antigen	CagA^a	No. of patients	% of patients	No. of patients	% of patients
+	+	119	63	150	79
+	−	11	6	14	7
−	+	48	26	17	9
−	−	11	5	8	4

The CagA antigen is a recombinant 66-kDa fragment expressed in E. coli (3).

The U.S. antigen is from a pool of five isolates from U.S. patients (25,26), and the Ladakh antigen is from a pool of four isolates from Ladakhi patients, as described in Materials and Methods.