Figure 1From: ERalpha-status of disseminated tumour cells in bone marrow of primary breast cancer patientsOestogen receptor (ER) α staining of MCF-7 (positive control) and SKBR3 (negative control) breast cancer cells spiked in bone marrow. A: MCF-7 cancer cells as positive control for ERα-staining. B: SKBR3 cancer cells as negative control ERα-staining.Back to article page