Baicalin, a type of flavonoid extracted from the dried root of Scutellaria baicalensis georgi, has been shown to effectively inhibit cell apoptosis. Colistin sulfate, a cyclic cationic polypeptide antibiotic, has been shown to have renal and neurological side effects. Dr. Hong Jiang and colleagues from Northeast Agricultural University assumed that baicalin would suppress colistin sulfate-induced neuronal apoptosis. In a study by Jiang et al, PC12 cells were pretreated with baicalin (25, 50 and 100 μg/mL), and exposed to 125 μg/mL colistin sulfate.