the investigation of sera from immunocompromised patients for antibody to cmv by elisa , ria , immunofluorescence ( if ) and complement-fixation ( cf ) revealed discrepancies that reflected differences in test specificity rather than sensitivity and suggested that for the long-term serological follow-up of such patients it would be advisable not to rely on only a single assay procedure .
C0220825
investigation
C0184661
procedure