RT Journal Article SR Electronic(1) A1 BLACKALL, LINDA L. A1 STRATTON, HELEN A1 BRADFORD, DEBBIE A1 DEL DOT, THERESE A1 SJÖRUP, CAMILLA A1 SEVIOUR, ELIZABETH M. A1 SEVIOUR, ROBERT J.YR 1996 T1 “Candidatus Microthrix parvicella,” a Filamentous Bacterium from Activated Sludge Sewage Treatment Plants JF International Journal of Systematic and Evolutionary Microbiology, VO 46 IS 1 SP 344 OP 346 DO https://doi.org/10.1099/00207713-46-1-344 PB Microbiology Society, SN 1466-5034, AB “Candidatus Microthrix parvicella” is a filamentous bacterium that grows with great difficulty in cultures from the mixed liquor of activated sludge sewage treatment plants. It is gram positive, and the ultrastructure of its cell walls has been determined to be of the gram-positive type by electron microscopical examination. Phylogenetically, it is a deep-branching member of the subphylum actinomycetes within the gram-positive phylum of the domain Bacteria. As for phenotypic features, it is known that the organism contains polyphosphate inclusions and that it is catalase positive. In mixed cultures in activated sludge plants and in pure culture in the laboratory, it has a characteristic and distinctive winding filamentous morphology, with filaments hundreds of micrometers long., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-46-1-344