The invention relates to protein LppQ of iMycoplasma mycoides/i subsp. imycoides/i SC, DNA encoding said protein, processes for the preparation of the protein and the DNA, a vector comprising the DNA, a host cell comprising the vector, use of the protein in immunological methods for the detection of iM. mycoides/i subsp. iMycoides/i SC, use of the DNA in genetic methods for the detection of iM. mycoides/i subsp. imycoides/i SC, use of the protein and DNA for preparing a vaccine against iM. mycoides/i subsp. imycoides/i, processes for the immunological detection of antibodies directed to iM. mycoids/i subsp. iMycoides/i SC and PCR process for the detection of iM. mycoides/i subsp. imycoides/i SC, a monoclonal antibody specific for LppQ or parts thereof and a diagnostic kit for the detection of an infection with iMycoplasma mycoides/i subsp. imycoides/i SC.
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