Detection of micrometastasis of gastric carcinoma in peripheral blood circulation

Table 1 Comparison of tumor cells detected with immunomagnetic beads technique

Patients	+	-	Total	%
Gastric carcinoma	25	35	60	41.7
Chronic gastritis	0	20	20	0.0
Total	25	55	80	41.7

χ² = 10.26, P < 0.005.

Table 2 Comparison of tumor cells detected with RT-PCR

Patients	+	-	Total	%
Gastric carcinoma	32	28	60	53.3
Chronic gastritis	0	20	20	0.0
Total	32	48	80	53.3

χ² = 15.63, P < 0.005.

Table 3 Comparison of positive rates between two methods

RT-PCR	Immunomagnetic bead separation		Total
	+	-
+	25	7	32
-	0	28	28
Total	25	35	60

χ² = 5.14, P < 0.05.