To detect oligomers in samples, we labeled the antibodies Nab228 (Sigma‐Aldrich) and Tau12 (BioLegend, San Diego, CA, USA) with the fluorescent dyes CF633 (Sigma‐Aldrich) and CF488A (Sigma‐Aldrich) according to manufacturer's protocol. The principle of reaction, the purification, and the determination of concentration and degree of labeling were previously described.
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