@article{mbs:/content/journal/ijsem/10.1099/00207713-33-2-336, author = "LÉVY-FRÉBAULT*, VÉRONIQUE and RAFIDINARIVO, ÉLIE and PROMÉ, JEAN-CLAUDE and GRANDRY, JEANNINE and BOISVERT, HENRI and DAVID, HUGO L.", title = "Mycobacterium fallax sp. nov.", journal= "International Journal of Systematic and Evolutionary Microbiology", year = "1983", volume = "33", number = "2", pages = "336-343", doi = "https://doi.org/10.1099/00207713-33-2-336", url = "https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-33-2-336", publisher = "Microbiology Society", issn = "1466-5034", type = "Journal Article", abstract = "A new species, Mycobacterium fallax, is described. A study of 22 strains showed that they form a homogeneous group with an internal phenotypic similarity value of 94.6 ± 4.1%. The colony morphology resembled that of Mycobacterium tuberculosis, with cord formation on solid medium. The characteristic features of these strains were that they were nonchromogenic and grew rapidly at 30°C but slowly at 37°C. Most formed a thermolabile catalase and produced nitrate reductase. A lipid analysis showed that tuberculostearic acid was present and that only α-mycolic acids were formed. These α-mycolic acids were di- and tri-unsaturated acids, a feature that has not been described previously in the mycobacteria. The type strain has been deposited in the Collection Nationale de Cultures de Microorganismes, Paris, France, as strain CIP 8139.", }