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Nature 583 , 620624 (2020)

10.1046/j.0022-202x.2001.01544.x 54

The Essential Role of Vitamin B12 in Blood Cell Formation Vitamin B12 is key for making blood cells, including platelets

doi: 10.1038/s41392-022-01245-y 43

But in clinical trials of people with solid cancers PI3K inhibitors have not been shown to improve how long people live, spurring researchers to investigate why this happens
