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Molecular size affects absorption, with smaller peptides generally crossing the mucosal barrier more easily than larger ones
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Drawbacks of Vitamin B12 Injections Invasive : The injection process can be intimidating or uncomfortable for some people
LD50 is a crucial number for determining the safety of any drug, and it is typically determined through animal testing, with known LD50 values for common substances like caffeine and aspirin 4m6s
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