Figure 5.

Immunohistochemical photomicrographs of case 1. (a) Tumor clusters of stromal micropapillary pattern had MUC1 expression on the outer surface strongly, indicating 'inside-out' pattern. (×200) (b) D2-40 and (c) CD34 were not found in cells consisting micropapillary tufts and (d) CK was not found in connective tissue surrounding the tumor cells. (b, c, ×200; d, ×400)

Ohe et al. Diagnostic Pathology 2011 6:92   doi:10.1186/1746-1596-6-92
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