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Titration curve of BMAA. Titration shows two pKa values, primary amine (pKα) and secondary amine (pKβ) and the pI (isoelectric point) is at 8.0. (Figure reproduced with permission from “Analysis, occurrence, and toxicity of ß-methylaminoalanine (BMAA),” published by Nordic Council of Ministers, Denmark (2007))
