Table 1.

Expression of HB-EGF in lung cancer and paired normal tumor-adjacent lung tissues.

				−	+	++	+++
Lung cancer (n = 35)			HB-EGF	9	6	5	15
Well-differentiated lung carcinoma (n = 11)	Moderately differentiated lung carcinoma (n = 13)	Poorly differentiated carcinoma (n = 11)
Paired normal tumor-adjacent lung tissues (n = 35)			HB-EGF	29	3	1	2

Statistical data of HB-EGF expression in lung tumor samples and matched, adjacent tissues. Statistical data of immunohistochemical staining of HB-EGF in 35 lung-tumor samples and matched adjacent tissues. “–” indicates negative staining; “+,” “++,” “+++” indicate increments of positive staining.