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↑(en) J. Rosenthaler, Beverly M. Guirard, G. W. Chang et Esmond E. Snell, « Purification and properties of histidine decarboxylase from Lactobacillus 30a », Proceedings of the National Academy of Sciences of the United States of America, vol. 54, no 1, , p. 152-158 (PMID5216347, PMCID285813, DOI10.1073/pnas.54.1.152, lire en ligne)