text: << Pinosylvin >> inhibited the proliferation of HCT 116 cells by arresting transition of cell cycle from G1 to S phase along with the downregulation of cyclin D1, cyclin E, cyclin A, cyclin dependent kinase 2 ([[ CDK2 ]]), CDK4, c-Myc, and retinoblastoma protein (pRb), and the upregulation of p21(WAF1/CIP1) and p53.