CCL19 and cancer: RT-PCR results showed that the expression levels of CCL19, CD24, and ZIC2 were significantly higher in the MCF-7, ZR-75-1, and SK-BR-3 cell lines compared to the reference MCF-10A group, whereas the transcription level of CEBPD was significantly lower in the cancer cell lines (p < 0.05) (Fig. 7B).