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https://i.ebayimg.com/images/g/bt8AAeSwh5Vo9bch/s-l1200.jpg This removes surface contaminants that could be introduced by the needle Dosage:10ml Catalog-Ref: WEBPCY137 Cyanocobalamin B12 injection 1000 mcg Multiple-Dose Vials 30 ml x 5/Box (Rx)
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