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Development of detectable specific antibodies in the serum as a result of infection or immunization.
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se·ro·con·ver·sion .sir-ō-kən-'vər-zhən, .ser-ō- n the production of antibodies in response to an antigen
se·ro·con·vert -'vərt vi
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se·ro·con·ver·sion (sēr″o-kən-vurґzhən) [sero- + conversion] the change of a patient's serologic test results from negative to positive, indicating development of antibodies in response to infection or immunization.Medical dictionary. 2011.