The highest percentage of myeloid (BDCA-1+CD19−) DCs was detected in the peritoneal fluid of the OC patients, and it was significantly higher than in PB (p < 0.0001; median 1.06% vs. 0.245%), and tumor tissue (p < 0.001; median 1.06% vs. 0.17%), than in PB of the control group (p < 0.0001; median 1.06% vs. 0.225% Figure 1A). This evidence concerns the gene CD1C and neoplasm.