vitamin b12 injection cyanocobalamin 1000mcg ml Injection, 1000 mcg/mL 1mL Vial Cyanocobalamin (Vitamin B12) Injection is sold as an FDA approved generic drug Cyanocobalamin B-12 Injection USP 1000mcg/mL

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It was not until a genetically engineered strain of Pseudomonas denitrificans was used, in which eight of the genes involved in the biosynthesis of the vitamin had been overexpressed, that the complete sequence of methylation and other steps could be determined, thus fully establishing all the intermediates in the pathway