“…Previous investigations disclosed that noscapine and its analogues induced apoptosis in many tumor cell types. ,− To determine whether the induction of apoptosis is responsible for the antiproliferative property of noscapine analogues, we assessed the induction of apoptosis in 4T1 mammary carcinoma tumor cells using annexin V and propidium iodide (PI) staining. As indicated in Figure , the percentage of cells undergoing apoptosis was 33.3% in noscapine-treated cells.…”