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doi: 10.1016/j.jmig.2006.07.013

A structural insight

This means they could affect the absorption of vitamin B12, which can potentially lead to vitamin B12 deficiency or worsen it in someone who already has it
Guo J, Liu M, Yang D, Bouxsein ML, Thomas CC, Schipani E, et al

Using the peptide will allow the body to self regulate the level of growth hormone needed by keeping the feedback loops intact
