Cathepsin B as a potential prognostic and therapeutic marker for human lung squamous cell carcinoma

Table 3 Cathepsin B immunostaining results of patients with lung SCC

Tissue type	Number	Male	Female	Positive rate^b	Intensity^b	Staining score^a,b
Adjacent normal tissues	29	14	15	0.41 ± 0.57	0.52 ± 0.74	0.59 ± 0.95
Well	22	12	10	0.68 ± 0.65	1.00 ± 0.93	1.18 ± 1.26
Moderately	35	16	19	1.49 ± 0.56	1.80 ± 0.47	2.69 ± 1.65
Poorly	42	19	23	2.67 ± 0.48	2.62 ± 0.49	7.02 ± 1.94

^a Total staining of CATB was scored as the product of the staining intensity (on a scale of 0–3) × the percentage of cells stained (on a scale of 0–3).
^b P value between the four groups: Adjacent normal tissues; Well; Moderately; Poorly.

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