Figure 1From: Flow cytometric analysis of CK19 expression in the peripheral blood of breast carcinoma patients: relevance for circulating tumor cell detectionDetection of CK19 expression in A431 cells by immunofluoresence staining. A431 cells were incubated with FITC-conjugated CK-19 antibody (A) or FITC-mouse IgG1 (isotype control) (B) and analyzed the expression of CK19. The scale bar = 20 μm.Back to article page