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Tests like serum B12 levels and methylmalonic acid (MMA) tests help

Nat Chem Biol 21 , 18951905 (2025)

Cancer cells lacking glutamine experience cell cycle arrest, emphasizing the importance of glutamine as a nitrogen source [79]

Adv Clin Exp Med 27(3):305311 Nakazawa T, Kondo T, Ma D, Niu D, Mochizuki K, Kawasaki T, Yamane T, Iino H, Fujii H, Katoh R (2012) Global histone modification of histone H3 in colorectal cancer and its precursor lesions