Taxonomic Relationships among Clostridium novyi Types A and B, Clostridium haemolyticum and Clostridium botulinum Type C Nakamura, Shinichi and Kimura, Imiko and Yamakawa, Kiyotaka and Nishida, Shoki,, 129, 1473-1479 (1983), doi = https://doi.org/10.1099/00221287-129-5-1473, publicationName = Microbiology Society, issn = 1350-0872, abstract= The present study was undertaken to examine the genetic relationships among the closely related species, Clostridium novyi types A and B, C. haemolyticum and C. botulinum type C. These species were tested for DNA-DNA homology and thermostability of DNA duplexes and sorted into three genetically related groups: I, C. novyi type A; II, C. novyi type B, C. haemolyticum and one C. botulinum type C strain (Stockholm); III, the remaining C. botulinum type C strains. A few biochemical criteria corresponding to the genetic differences were recommended to differentiate each group. These studies imply that C. haemolyticum might be considered as C. novyi type D and that there are two genetically different groups in C. botulinum type C., language=, type=