The use of Endopep-MS for the detection of botulinum toxins A, B, E, and F in serum and stool samples.
Kalb SR, Moura H, Boyer AE, McWilliams LG, Pirkle JL, Barr JR. The use of Endopep-MS for the detection of botulinum toxins A, B, E, and F in serum and stool samples. Anal Biochem. 2006 Apr 01; 351(1):84-92.