Figure S1. Examples of glycoarrays from nine MMN (2–10) and two control (11–12) cases, illustrating the different patterns of binding to individual glycolipids and their 1:1 complexes.

Figure S2. Regression analysis of GM1 and/or GM1:GalC for both glycoarray and ELISA.

Figure S3. Panel A. Analysis of the OND samples registering low positive intensity values for either GM1 and/or GM1:GalC by either ELISA and/or glycoarray. One sample (numbered 1) is positive for GM1 and GM1:GalC by both ELISA and glycoarray, and the corresponding glycoarray is shown in Panel B.

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