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The dividers were then removed to allow the test rat to explore the apparatus for another 10 min
Since multiple species of Propionibacterium produce no exotoxins or endotoxins and have been granted GRAS status (generally regarded as safe) by the United States Food and Drug Administration, they are the preferred bacterial fermentation organisms for vitamin B 12 production
Mujaddidi N, Nisa S, Al Ayoubi S, Bibi Y, Khan S, Sabir M, Zia M, Ahmad S, Qayyum A
doi:10.2165/00139709-200322010-00004
doi: 10.3389/fphar.2020.00854 61 ShaheenS
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