Sphaerochaeta associata Troshina et al. 2015 Troshina O. Oshurkova V. Suzina N. Machulin A. Ariskina E. Vinokurova N. Kopitsyn D. Novikov A. Shcherbakova V. Sphaerochaeta associata sp. nov., a spherical spirochaete isolated from cultures of Methanosarcina mazei JL01 2015 65 12 4315 4322 International Journal of Systematic and Evolutionary Microbiology Int J Syst Evol Microbiol 1466-5026 1466-5034 10.1099/ijsem.0.000575 26341497