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This can happen as the result of a problem known as functional vitamin B12 deficiency, where there's a problem with the proteins that help transport vitamin B12 between cells
doi: 10.1152/ajpgi.1996.271.2.G223
Clin J Pain
( C ) GLUT1, PKM, and G6PD expression of pp65 495503 specific CD8 + T cells ( n = 1020/group)
