Fig. 7From: A cell-targeted chemotherapeutic nanomedicine strategy for oral squamous cell carcinoma therapyAnnexin V-FITC FACS apoptosis analysis of HN6 cancer cells after treatment with free CDDP, PLGA NP, and PLGA/NR7 NP for 24 and 48h, respectively. a indicates PI positive cells (necrosis), b represents late apoptosis (PI and Annexin positive cells), c represents healthy cells (PI and Annexin negative cells), d early apoptosis (Annexin positive cells)Back to article page