Skip to main content
. 2020 Jul 25;32(5):722–726. doi: 10.1177/1040638720943127

Figure 1.

Figure 1.

Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) Clostridium botulinum type A (BoNT/A) positive control. The intact peptide substrate peak is 2,406 m/z (mass-to-charge). BoNT/A cleavage of the peptide creates 2 fragments (daughter peptides), present at 998 and 1,426 m/z. Figure 2. MALDI-TOF MS BoNT/A negative control. The intact peptide substrate peak is 2,406 m/z, and no daughter peptides are present. Figure 3. MALDI-TOF MS detection of BoNT/A in the rumen contents from cow 3. As in Figure 1, daughter peptides at 998 and 1,426 m/z indicate cleavage by BoNT/A. The intact peptide substrate peak is 2,406 m/z.