Se contents of rice and its products were determined by HG-AFS.
The sensitivities of HepG-2, MC3T3-E1, PC12 and RAW264.7 cells to Pb2+ were tested.
The effects of SPHs-1, SPHs-2, SPHs-3 on cell viabilities were tested.
Protective mechanisms of SPHs-3 against Pb2+-induced cytotoxicity were studied.