Table IV.

Piwi protein expression in 181 gastric cancer and adjacent tissues.

	Weighted expression scores
	−	1+	2+	3+	P-value
Cancer	49	52	57	23
Normal	21	33	110	17	2.3×10−7

Weighted expression scores: -, scores 0–1; 1⁺, scores 1–2; 2⁺, scores 3–4; 3⁺, scores 6–12 (see detailed scoring in Supplementary Methods).