correct syringe for b12 injection You are about to give parenteral B12. Which electrolyte must be checked first and what complication are you trying to prevent? Treating Severe Vitamin B12 Deficiency
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![Noncovalent Binding between Guanidinium and Anionic Groups: Focus on Biological- and Synthetic-Based Arginine/Guanidinium Interactions with Phosph[on]ate and Sulf[on]ate Residues](https://pubs.acs.org/cms/10.1021/cr040603j/asset/images/medium/cr040603jf1.gif)






