Table 2.

CD68 and OPG are commonly co-expressed in primary breast tumors

% with moderate/strong CD68 staining	% with moderate/strong OPG staining	Co-occurrence of moderate/strong CD68 and OPG staining
95.7	78.3	35 out of 46 tumors = 76.1%

CD68 and OPG protein levels were assessed by immunohistochemistry in tissue microarray slides containing human patient primary breast cancer samples (see Methods). Two left columns: data is shown as the percentage of samples presenting with moderate/strong CD68 and OPG staining. Right column: co-occurrence of CD68 and OPG staining represent the detection of moderate/strong expression of both CD68 and OPG within the same patient sample