Thymidine Kinase 1 Upregulation Is an Early Event in Breast Tumor Formation

Figure 1

TK1 breast tissue staining. (a) No TK1 staining was found in most normal duct tissue. TK1 positive staining could be found in the cytoplasm of tumor cells of (b) simple carcinoma, (c) infiltrating duct carcinoma, (d) medullary carcinoma, and (e) sclerosing carcinoma tissues.

(a)

(b)

(c)

(d)

(e)