Which one of the following statement regarding Chlamydia pneumoniae is TRUE?
Chlamydiae possess group specific antigens. These are heat-stable lipopolysaccharides with 2-keto-3-deoxyoctanoic acid as an immunodominant component. Antibody to these genus-specific antigens are detected by complement fixation (CF) and immunofluorescence. Ref: Harrisons Internal Medicine, 18th Edition, Chapter 176; Jawetz, Melnick and Adelberg's Medical Microbiology, 25th Edition, Chapter 27