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PLoS One 7(2):e32146 Licht T et al (2003) Induction of pro-angiogenic signaling by a synthetic peptide derived from the second intracellular loop of S1P3 (EDG3)

More recently, hydroxocobalamin, methylcobalamin and adenosylcobalamin can also be found in more expensive pharmacological products and food supplements
2003 Nov-Dec;32(6):515-23

One measure of tiredness also improved in the DSIP group
