Table I.

Immunohistochemical staining of katanin p60.

Tissue type	No. of patients	Mean optical density	Standard error	P-value (compared with healthy breast)
Healthy breast	10	0.1687	0.0074
Primary breast tumor	10	0.3019	0.0233	0.001
Bone metastatic tumor	10	0.3905	0.0270	0.001