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Detection of Neu5Gc and Neu5Ac on SEES cells N-glycolylneuraminic acid (Neu5Gc) was not detected in xenogeneic-free SEES cells, but was observed in SEES-1, SEES-2, and SEES-3 cells. N-acetylneuraminic acid (Neu5Ac) was found in all examined SEES cell lines. The detection limit of sialic acids is 0.01 nmol/mg protein.
