<prompt> Following is true of T. pallidum except -Can be maintained in rabbit testisMotile by peritrichate flagellaTo visualise, dark ground microscopy is usedTPI test is very-useful  <response>: Option 1 Culture: - Pathogenic treponemes cannot be grown in aificial culture media but are maintained rabbit testes. - However, nonpathogenic treponemes e.g. Reiter treponemes can be cultured in Smith Noguchi media Option 2 - It is actively motile. Endoflagella are responsible for motility of the bacteria. Option 3 Direct Microscopy: - Dark field microscopy - Direct IF staining from sample DFA-TP - Silver impregnation method Option 4 - TPI : Specific Treponemal test for diagnosis of Syphilis. 