Link to Pubmed [PMID] – 22993181
J. Clin. Microbiol. 2012 Dec;50(12):4091-4
In two outbreaks of food-borne botulism in France, Clostridium botulinum type A was isolated and characterized from incriminated foods. Botulinum neurotoxin type A was detected in the patients’ sera by mouse bioassay and in vitro endopeptidase assay with an immunocapture step and identification of the cleavage products by mass spectrometry.
http://www.ncbi.nlm.nih.gov/pubmed/22993181