Toxicogenetic study of omeprazole and the modulatory effects of retinol palmitate and ascorbic acid on Allium cepa. Braga AL, de Meneses AAPM, Santos JV de, et al. Toxicogenetic study of omeprazole and the modulatory effects of retinol palmitate and ascorbic acid on Allium cepa. Chemosphere. 2018;204:220-226. doi:10.1016/j.chemosphere.2018.04.021 Read more