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Improvements in animal models are typically observed within 3 to 7 days, with fuller healing occurring over 2 to 4 weeks depending on severity

Sealed bacteriostatic water has a shelf life from the manufacturer (check the packaging)

doi: 10.4049/jimmunol.0901773

A serum B12 level between 300 pg/mL and 900 pg/mL is considered normal and levels above 900 pg/mL are considered high