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[PubMed] [Google Scholar] 83.Blum J, Fridovich I

Injection Site Selection and Rotation Choosing the right spot for Vitamin B12 shots is important

Plasma levels decline with age from about 200 ng/mL at age 20 to roughly 80 ng/mL by age 60

Peptide hormone regulation of DNA damage responses

Neuron 90 , 278291 (2016)
