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[Spiroplasma from Tabanidae capable to multiply and to persist in the central nervous system in mice].

Using alternate passages of cultivation in vitro at 37 degrees C and in suckling mice following intracerebral inoculation, a tabanid spiroplasma was demonstrated capable of multiplication and persistence in mice for 6 successive passages, without production of specific antibody. This is the first report of a spiroplasma from a common flying haematophagous arthropod shown to produce persistent infection of a mammal.