(A) Expression level of selected miRNAs (miR-21, miR-221, miR-210, miR-195, miR-145 and Let-7a) in total serum samples from breast cancer patients and healthy individuals. (B) Expression profiles of miR-21, miR-221, miR-210, miR-195, miR-145 and Let-7a in TNBC patients and other hormonal subtypes (ER+/PR+/Her2neu+), (ER-/PR+/Her2neu+) and (ER-/PR-/Her2neu+) in sera from breast cancer patients along with healthy individuals. (C) Expression level of miR-21, miR-221, miR-210, miR-195, miR-145 and Let-7a in sera of fibroadenoma and different tumor grades of breast cancer and healthy controls. (D) Comparison of expression level of miR-21, miR-221, miR-210, miR-195, miR-145 and Let-7a in TNBC tissue, sera and cell lines (MCF-7 and MDA-MB-231) with normal mammary epithelial cell line MCF-10A.