Fig. 1
From: Ex vivo 18O-labeling mass spectrometry identifies a peripheral amyloid β clearance pathway
MALDI-TOF MS CSF Aβ peptide patterns of a a non-symptomatic control, b Patient 1 in the acute phase of BM and c after antibiotic treatment. The recorded isotope patterns of d Aβ 1–20 and e Aβ 1–40 in acute BM are shown in blue bars, and the expected isotope patterns of the peptides without 18O incorporation and with one oxygen atom exchanged for 18O at 50% abundance is indicated by red and green bars, respectively