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View at PubMed LCMS/MS analytical-method study (2021): Development and validation of an LC-MS/MS assay for 5-amino-1-methylquinolinium in rat plasma and urine
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[111] The microbiological assay has been the most commonly used assay technique for foods, utilizing certain vitamin B 12 -requiring microorganisms, such as Lactobacillus delbrueckii subsp
