Abstract
The passage of Treponema pallidum through commercially available Millipore membrane filters of various pore sizes was examined. No microscopically detectable organisms passed through a filter with a pore diameter of 0.22 μm. As pore size was increased, progressively more organisms passed through. Motile organisms passed through filters to a greater extent than nonmotile ones; however, 22% of the motile and 50% of the nonmotile T. pallidum organisms did not pass through the largest pore diameter tested (14.0 μm). Filtration of T. pallidum suspensions through membrane filters may offer a way of separating the organisms from larger particles of debris which accompany their extraction from rabbit testicular syphilomas.
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Selected References
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- Artley C. W., Clark J. W., Jr Statistical approach to evaluating the method of Morgan and Vryonis for enumerating Treponema pallidum. Appl Microbiol. 1969 May;17(5):665–670. doi: 10.1128/am.17.5.665-670.1969. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Tilden E. B. Filtration of Treponema pallidum and Treponema novyi through Collodion Membranes. J Bacteriol. 1937 Mar;33(3):307–313. doi: 10.1128/jb.33.3.307-313.1937. [DOI] [PMC free article] [PubMed] [Google Scholar]